Heart Goes Boom!!
Hikasa Youko
K-ON! Akiyama Mio’s Character Theme
Hana wa hajirau mono tori wa saezuru mono
Metatsu no wa yada kedo nande? Uta tsukucchau
Yubi wa tsumabiru mono rizumu wa kidzumu mono
Nakama ga ireba saikyou iki wo awase yukou
Beesu ga kanjin donna mono, hito datte
Taishin kyoudo wa OK?
Tate ni yoko ni yusaburu yo
Kidoairaku jazube no bodi ni zenbu watashi ga tsumatteru
Shunkashuutou nijuuyo jikan unaru haato wa mukyuu
Bo Boom Boom Boom Boom!!
Tsuki wa oritatsu mono hoshi wa uchiageru mono
Hibi sekai shinkajuu dakara bootto dekinai
Kaze wa umidasu mono kabe wa koeteku mono
Agattara shinkokyuu kara wo yaburi yukou
Ruuto ga kanjin donna jinsei datte
Yume ya akogare sagashite
Nishi ni higashi ni hita hashiru yo
Mugamuchuu yon hon no gen ni zenbu mirai wo yudaneteku
Gorimuchuu michi ni mayottemo
Sokkyou kidoushuusei
Bo Boom Boom Boom Boom
Utsukushiki juuteion shinjite kanjite Goes on
Kidoairaku jazube no bodi ni zenbu watashi ga tsumatteru
Shunkashuutou nijuuyo jikan unaru haato wa mukyuu
Bo Boom Boom Boom Boom!!
Day & Night Anytime
Boom Boom Boom!!
A blushing flower, a singing bird
I don’t stand out at all, so, how? I write a song
Finger plucking, Engraving a rhythm
When I’m with my friends it’s the best, our breaths join as one
The bass is essential, no matter what or who it is
Is your earthquake resistance OK?
You’ll be shaken up and down, side to side
I’m packing all my feelings into the body of my jazz bass
Four seasons a year, 24 hours a day, my roaring heart never stops
Bo Boom Boom Boom Boom!!
The moon shining, stars shooting up
The world is evolving every day, so I can’t just do it absent mindedly
The wind coming forth, crossing over a wall
If I take a deep breath I’ll break from my shell
The roots are essential, no matter what life form
Search for your dreams and aspirations
To the east, to the west, run on earnestly
Absorbed, I entrust the future to these four strings
Bewildered, even if I lose my way,
I’ll pinpoint the right direction by improvising
Bo Boom Boom Boom Boom!!
This beautiful, deep, bass sound, believe in it and feel it go on
I’m packing all my feelings into the body of my jazz bass
Four seasons a year, 24 hours a day, my roaring heart never stops
Bo Boom Boom Boom Boom!!
Day & Night Anytime
Boom Boom Boom!!
Japanese Lyrics
花は恥じらうもの 鳥はさえずるもの
目立つのはやだけど なんで？ 歌作っちゃう
指は爪弾くもの リズムは刻むもの
仲間がいれば最強 呼吸（いき）を合わせゆこう
ベースが肝心 どんな物、人だって
耐震強度はOK? 縦に横に 揺さぶるよ
喜怒哀楽 ジャズベのボディに 全部私が詰まってる
春夏秋冬 二十四時間 うなるハートは無休
Bo Boom Boom Boom Boom!!
月は降り立つもの 衛星（ほし）は打ち上げるもの
日々世界進化中 だから ぼーっとできない
風は生み出すもの 壁は越えてくもの
アガったら深呼吸 殻を破りゆこう
ルートが肝心 どんな人生だって
夢や憧れ探して 西に東に ひた走るよ
無我夢中 四本の弦に 全部未来をゆだねてく
五里霧中 道に迷っても 即興で軌道修正
Bo Boom Boom Boom Boom!!
美しき重低音 信じて感じてGoes on
喜怒哀楽 ジャズベのボディに 全部私が詰まってる
春夏秋冬 二十四時間 うなるハートは無休
Bo Boom Boom Boom Boom!!
Day & Night Anytime
Boom Boom Boom!!