Best SSD for music

SSD block storage is not going to have a noticeable effect on the music.  The application is going to read the same bits via the file handle unless there is something seriously wrong with your OS.

Instead of hunting for a specific SSD for audio playback, I would focus on a filesystem which has strong checksum features to make sure you don't have silent corruption of your data, and make sure you have a backup copy to restore from.