HAPPY SYNTHESIZER kimi no mune no oku made
Todoku you na MELODY kanaderu yo
Hakanaku chitta awai kataomoi
Waraibanashi da ne ima to nareba

Miru mono subete kagayaite mieta
Ano hibi ga kirei ni waratteru yo
Gamensuru koto dake oboenakya ikenai no?
“Otona ni natte choudai ne?” naranakute ii yo

Shiranai koto bakari shiranai nante ienakute
“Taihen oniai de” uso tsuite gomen ne
HAPPY SYNTHESIZER kimi no mune no oku made
Todoku you na MELODY kanaderu yo

Tsumaranai “tatemae” ya ya na koto zenbu
Keshite ageru kara kono oto de
Nan no torie mo nai boku ni tada hitotsu
Sukoshi dakedo dekiru koto

Kokoro odoraseru kazaranai kotoba
Denshion de tsutaeru yo
Suki ni naru koto rikutsu nanka ja nakute
“Kojutsuke” nante iranainja nai?

Jidai no sei to akirametara soko made
Fumidasanakucha nani mo hajimaranai
“Gomen ne yoruosoku neru tokoro datta desho?”
“Odoroita watashi mo kakeyou to shiteta

Kokoro no uragawa o kusugurareteru you na
Hikareau futari ni shiawase na oto o
HAPPY SYNTHESIZER hora ne tanoshiku naru yo
Namida nuguu MELODY kanaderu yo

Tsuyogaranaku tatte iinja nai? Betsu ni
Jibun ni sunao ni nareba ii
Nan no torie mo nai boku ni tada hitotsu
Sukoshi dakedo dekiru koto

Chotto tereru you na tanjun na kimochi
Denshion de tsutaeru yo
HAPPY SYNTHESIZER kimi no mune no oku made
Todoku you na MELODY kanaderu yo

Tsumaranai “tatemae” ya ya na koto zenbu
Keshite ageru kara kono oto de
Nan no torie mo nai boku ni tada hitotsu
Sukoshi dakedo dekiru koto

Kokoro odoraseru kazaranai kotoba
Denshion de tsutaeru yo
HAPPY SYNTHESIZER hora ne tanoshiku naru yo
Namida nuguu MELODY kanaderu yo

Tsuyogaranaku tatte iinja nai? Betsu ni
Jibun ni sunao ni nareba ii
Nan no torie mo nai boku ni tada hitotsu

Sukoshi dakedo dekiru koto
Chotto tereru you na tanjun na kimochi
Denshion de tsutaeru yo