This is open source game. I used some music of
Toby Fox-undertail ost no. 079, undertail ost no. 100, undertail ost no. 084, undertail ost no. 003, undertail ost no. 098, undertail ost no. 97, undertail ost no. 65.
Koji Kondo(nintendo)- Super Mario Bros. castle theme.
Kamex, Toby Fox-undertail his theme remix, undertail your mest friend remix, undertail final remix.
plz enjoy it!