音楽的にベストを尽くしてください、は何て言うの

Thanks for Chris!!

It was very helpful your suggestion.

My suggestions:

Give it your absolute best musically.

Musically, give it all you've got.

Give [to] the music your absolute best shot.

Muscially, give it your utmost best.

Devote your very best [efforts] to the music.

Etc.