Like some peoples up there, I can't really focus when writing if I have music with lyrics on since they tend to make me lost focus of what I'm writing. Instrumentals and classical is fine however, for background music. Sometimes it's from games or just random music K doing online.
For drawing, I listened to a random whole lot of genres, from classics to baby metal (I'm talking about poppy).
My favourite classical music is Claire de Lune. It just calming and when I have a hard time sleeping, which is rare, I just play it on loop. Troye Sivan, AJR, Louis Tomlinson, Lucas Graham, Calum Scott, 80s, 90s songs , and soon and so on, they're all good as long as I liked the music and lyric.
(I'm rambling lol)