Hikasa Youko, Horie Yui - Apple (Симфогир : Песнь боевых Принцесс OST)
Akiyama Mio (CV: Hikasa Youko) - Hello Little Girl
Youko Hikasa & Mizuki Nana - Fushicho no FLAME (Symphogear G, симфогир 2 )
Yoshimasa Hosoya & Youko Hikasa - Taiyou to Tsuki
Tsubasa×Maria (CV: Youko Hikasa×Mizuki Nana) - Fushichou no Flamme (Off Vocal)
【Inu x Boku SS】 - Yoshimasa Hosoya & Youko Hikasa - Taiyou to Tsuki [ED-7] Реншоу и Нобара
Youko Hikasa - Utsukushiki Zankoku na Sekai
Hikasa Youko & Hosoya Yoshimasa - Taiyou to Tsuki [Inu x Boku Secret Service ED 6]
Akiyama Mio (Hikasa Youko) - Listen!!
Akiyama Mio (Hikasa Youko) - Pure Pure Heart
Akiyama Mio (Hikasa Youko) - NO. Thank You
Chihara Minori, Kotobuki Minako, Yahagi Sayuri, Hikasa Youko - Shy Girls [Chuu-Bra!! ED]
♪ Hikasa Youko & Hosoya Yoshimasa - Taiyou to Tsuki (Inu x Boku SS ED 7)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako - Cagayake! GIRLS (K-ON! TV-1 OP)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako - Fuwa Fuwa Time (Instrumental)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako - Tsubasa wo Kudasai (Instrumental)
Aki Toyosaki & Hikasa Youko & Satou Satomi & Kotobuki Minako - Fuwa Fuwa Time
Akiyama Mio (CV: Hikasa Youko) - Heart Goes Boom!!
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako - Don't say Lazy (K-ON! TV1 ED)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako - Tsubasa wo Kudasai
Toyosaki Aki, Hikasa Youko, Satou Satomi & Kotobuki Minako - Happy!? Sorry!!
Hikasa Youko & Hosoya Yoshimasa ED 7 - Taiyou to Tsuki (INST) [SS]
Houkago Tea Time (K-On) -Toyosaki Aki & Hikasa Youko - Watashi No Koi Wa Hocchikisu
Hikasa Youko - Aozora no Monologue
Hikasa Youko - Soukuu no Monologue (Instrumental)
Hikasa Youko & Hosoya Yoshimasa - Taiyou to Tsuki
Hikasa Youko & Hosoya Yoshimasa - Taiyou to Tsuki (Inu x Boku SS ED6)
♪ Hikasa Youko & Hosoya Yoshimasa - Taiyou to Tsuki (OST "Inu x Boku SS" ED 7) [Реншоу x Нобара]
Maria Cadenzavna Eve (CV: Hikasa Youko) - Dark Oblivion (Off Vocal)
Maria Cadenzavna Eve (CV: Hikasa Youko) - Ressou-Gungnir (Off Vocal)
Hikasa Youko - Utsukushiki Zankoku na Sekai (Shingeki no Kyojin ED-1)
Hikasa Youko - Dance in the Fake
[Shingeki No Kyojin ED1] Hikasa Youko - Utsukushiki Zankoku na Sekai
Hikasa Youko & Hosoya Yoshimasa - Taiyou to Tsuki (off vocal)
Hikasa Youko & Yuzuki Ryouka - TrinityxSeventh+Heaven (Единство семи магов / Trinity Seven)
Hikasa Youko, Toyosaki Aki, Satou Satomi, Kotobuki Minako, - Don't say 'lazy'
Hikasa Youko, Satou Satomi, Yahagi Sayuri - Yamato Nadeshiko Education
Hikasa Youko & Hosoya Yoshimasa - Taiyou to Tsuki (Inu × Boku SS ED6)
Hikasa Youko - Utsukushiki Zankoku na Sekai - ED
Hikasa Youko & Hosoya Yoshimasa - Taiyou to Tsuki [Inu x Boku Secret Service ED 6]
Houkago Tea Time (Akiyama Mio\Hikasa Youko) - Heart Goes Boom!!
Hikasa Youko - Utsukushiki Zankoku na Sekai (ED 1)
Я и мой пес из сс - Hikasa Youko & Hosoya Yoshimasa-Taiyou to Tsuki ed7
Kyoukai no Rinne: 2nd Season (ED 1) - Hanashi wo Shiyou - by Hikasa Youko
Maria × Tsubasa Kazanari (CV: Youko Hikasa × Mizuki Nana) - Fushicho no FLAME ~Off Vocal~ (Senki Zesshou Symphogear G OST)
Атака Титанов - Ендинг 1 (Hikasa Youko) | Вторжение Гигантов ED - Utsukushiki Zankoku na Sekai (vk.com/shinokyns)
Sakurakou K-ON Bu [Hirasawa Yui, Akiyama Mio, Tainaka Ritsu, Kotobuki Tsumugi (CV: Toyosaki Aki, Hikasa Youko, Satou Satomi, Kot - Don't say "lazy"
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Watashi no Koi wa Hotch Kiss (Cassette Mix)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Honey sweet tea time (Studio Mix)
Fujimura Ayumi & Toyosaki Aki & Chihara Minori & Hirano Aya & Hikasa Youko - Seigi no KISS de Shoubu Shite
Maria × Tsubasa Kazanari (CV: Youko Hikasa × Mizuki Nana) - Fushicho no FLAME (Senki Zesshou Symphogear G OST)
Maria × Tsubasa Kazanari (CV: Youko Hikasa × Mizuki Nana) - Fushicho no FLAME ~TV-size~ (Senki Zesshou Symphogear G OST)
Sakurakou K-On Bu (Aki Toyosaki, Youko Hikasa (Lead Vocal), Satomi Satou, Minako Kotobuki, Ayana Taketatsu) - Listen!! (K-On!! Ending Theme)
Sakurakou K-On Bu (Aki Toyosaki, Youko Hikasa (Lead Vocal), Satomi Satou, Minako Kotobuki, Ayana Taketatsu) - NO, Thank You! (K-On!! Ending Theme)
Sakurakou K-ON Bu [Hirasawa Yui, Akiyama Mio, Tainaka Ritsu, Kotobuki Tsumugi, Nakano Azusa (CV: Toyosaki Aki, Hikasa Youko, Sat - Curry Nochi Rice (Yui MainVo.)
HO-KAGO TEA TIME [Hirasawa Yui, Akiyama Mio, Tainaka Ritsu, Kotobuki Tsumugi, Nakano Azusa (CV: Toyosaki Aki, Hikasa Youko, Sato - GO! GO! MANIAC (Instrumental)
Sakurakou K-ON Bu [Hirasawa Yui, Akiyama Mio, Tainaka Ritsu, Kotobuki Tsumugi (CV: Toyosaki Aki, Hikasa Youko, Satou Satomi, Kot - Fuwafuwa Time
Hirasawa Yui, Akiyama Mio, Tainaka Ritsu, Kotobuki Tsumugi, Nakano Azusa (CV: Toyosaki Aki, Hikasa Youko, Satou Satomi, Kotobuki - Fudepen Ballpen
Hirasawa Yui, Akiyama Mio, Tainaka Ritsu, Kotobuki Tsumugi (CV: Toyosaki Aki, Hikasa Youko, Satou Satomi, Kotobuki Minako) - Fuwafuwa Time
Sakurakou K-ON Bu [Hirasawa Yui, Akiyama Mio, Tainaka Ritsu, Kotobuki Tsumugi (CV: Toyosaki Aki, Hikasa Youko, Satou Satomi, Kot - Happy!? Sorry!!
Fujimura Ayumi, Toyosaki Aki, Chihara Minori, Hirano Aya, Hikasa Youko - Wishes Hypocrites (Seikon no Qwaser ED2)
Fujimura Ayumi & Toyosaki Aki & Chihara Minori & Hirano Aya & Hikasa Youko - Seigi no KISS de Shoubu Shite
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Utauyo!! MIRACLE (K-ON!! TV-2 OP2)
Hikasa Youko with Toyosaki Aki, Satou Satomi, Kotobuki Minako & Taketatsu Ayana - Utauyo!!MIRACLE
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Tenshi ni Fureta yo! (Studio Mix)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Honey sweet tea time (Studio Mix)
OP01 - Inoue Marina & Takahashi Chiaki & Taketatsu Ayana & Hikasa Youko - Sekai to Issho ni Mawarou yo!
Sakurakou K-ON Bu: Hirasawa Yui CV: Toyosaki Aki), Akiyama Mio (CV: Hikasa Youko), Tainaka Ritsu (CV: Satou Satomi), Kotobuki Ts - Tsubasa wo Kudasai
Fujikawa Kauri & Fujikawa Ikuto (Hikasa Youko & Hosoya Yoshimasa) - Taiyou to Tsuki
Fujimura Ayumi & Toyosaki Aki & Chihara Minori & Hirano Aya & Hikasa Youko - Passionate Squall (Seikon no Qwaser)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - U&I (instrumental)
Hanazawa Kana & Hidaka Rina & Hikasa Youko & Iguchi Yuka & Ogura Yui - SHOOT!
Hikasa Youko & Uchida Maaya & Taketatsu Ayana & Akesaka Satomi - Kyoku Onna Overdrive
Hikasa Youko with Toyosaki Aki, Satou Satomi, Kotobuki Minako & Taketatsu Ayana - NO, Thank You! (K-on OST)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - GO! GO! MANIAC (K-ON!! TV-2 OP1)
Ayumi Fujimura, Toyosaki Aki, Chihara Minori, Hirano Aya, Hikasa Youko - Passionate squall
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Fude Pen ~Ballpoint Pen~ (Cassette Mix)
Sakurakou K-ON Bu: Hirasawa Yui (CV: Toyosaki Aki), Akiyama Mio (CV: Hikasa Youko), Tainaka Ritsu (CV: Satou Satomi), Kotobuki T - Let's Go (Yui Mio Ritsu Tsumugi Azusa mix)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Ichigo Parfait ga Tomara nai - Can't Stop My Strawberry Parfait (Cassette Mix)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Tenshi ni Fureta yo!
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako - Fuwa Fuwa Time (Instrumental - Drums)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Ichigo Parfait ga Tomara nai (Studio Mix)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Gohan wa Okazu (Cassette Mix)
Hikasa Youko, Yukana, Shimoda Asami, Hanazawa Kana, Inoue Marina, Saitou Chiwa & Mimori Suzuko - BEAUTIFUL SKY
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako - 翼をください
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Singing!
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - ぴゅあぴゅあはーと
Hikasa Youko ( Эми Юса) & Hosoya Yoshimasa(Yuusuke Asahina / Юскэ Асахина) - Taiyou to Tsuki (Inu x Boku SS ED 7)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana - Fude Pen ~Ballpoint Pen~ (Cassette Mix)
Hikasa Youko with Toyosaki Aki, Satou Satomi, Kotobuki Minako & Taketatsu Ayana - Cagayake! (Opening)
Hikasa Youko with Toyosaki Aki, Satou Satomi, Kotobuki Minako & Taketatsu Ayana - Fuwa Fuwa Time (Yui Main Vo.)
Hikasa Youko with Toyosaki Aki, Satou Satomi, Kotobuki Minako & Taketatsu Ayana - Let's Go
Hikasa Youko with Toyosaki Aki, Satou Satomi, Kotobuki Minako & Taketatsu Ayana - Yuuzora a la Cart
Inoue Marina & Takahashi Chiaki & Taketatsu Ayana & Hikasa Youko - Sekai to Issho ni Mawarou yo!
Hikasa Youko, Toyosaki Aki, Satou Satomi, Kotobuki Minako, Taketatsu Ayana - Don't Say You Are Lazy!
Houkago Tea Time (Hikasa Youko & Toyosaki Aki & Satou Satomi & Kotobuki Minako) - Don't say 'lazy' [K-ON TV-1 ED 1]
Houkago Tea Time (Hikasa Youko & Toyosaki Aki & Satou Satomi & Kotobuki Minako) - NO,Thank You![K-ON TV-2 ED 2]
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako & Taketatsu Ayana (HTT - Ho-kago tea time. Hirasawa Yui & Akiyama Mio & Tainaka Ritsu & Kotobuki Tsumugi & Nakano Azusa) - Fude Pen (Ballpoint Pen)
Toyosaki Aki & Hikasa Youko & Satou Satomi & Kotobuki Minako - Tenshi ni Fureta yo!
Члены Школьного совета OP Hikasa Youko, Satou Satomi, Yahagi Sayuri - Yamato Nadeshiko Education
Hirasawa Yui, Akiyama Mio, Tainaka Ritsu, Kotobuki Tsumugi, Nakano Azusa (CV: Toyosaki Aki, Hikasa Youko, Satou Satomi, Kotobuki - Fuwafuwa Time
Hikasa Youko with Toyosaki Aki, Satou Satomi, Kotobuki Minako & Taketatsu Ayana - Utauyo!!MIRACLE