You should do it song by song, eg Track 1 (Name), etc. You should also do entire album, in the description add the timestamps for each song for quick skipping, eg 00:10 Intro, 01:35 Track 1 (Name), etc. You will get better exposure in search having more content distribution AND you will provide a full album, you can link from all songs back to the full album (caption: Like what you hear? Click here to listen to the album free!) for example.