Hey Azalea! Aw thank you so much for your lovely comment. I woke up this morning, saw it in under notifications, and it seriously made my morning! People calling games as art is one of the reasons I love game dev sooo much.
The OST for the ReDraw version is all new and I really spent time selecting each individual song. There is no official OST posted as a collection anywhere. However each song is royalty-free and is available for free download online somewhere. The problem is where, since I can't recall. The ending credits movie has a listing for each song and what website it was found on I believe. So that would be the best place to start, and you could even collect the songs you like most on your own. =)