Ive recently noticed, that games lack music.
I think roblox games should have better music tracks.
I think games would be more immersive if they did it.
Whats your opinion on this,
Monkey 
There are issues with copyright claims. Roblox has been sued before, and I don’t think they’re willing to make that mistake again. They make their own audio, but other people create their own and upload as well.
I mean, musicians aren’t really used for the roblox website, maybe roblox developers should consider hiring some?
Yeah, a few Roblox developers are willing to be hired as music composers. A 1/10 chance that the music composer is good.
Not necessarily, you just need to find a good composer.