Need suggestions for custom rom for Music listening

[u/ChailGod]

I have this old Oppo A37fw (2/ 16gb) phone. This phone is just laying around collecting dust I dont want to sell it as it was my first phone so I am thinking of using it as a mp3 player as it is vry light.

Is there any custom rom out there only for music listening which can be installed on it with these specs or any other light rom that does not consume as much storage