To download a full album that is one video (like this https://www.youtube.com/watch?v=fWvKvOViM3g), give bum the link to the video and then a text file with the timestamps and song names.

[~] $ bum https://www.youtube.com/watch?v=fWvKvOViM3g timestamps.txt

Where timestamps.txt contains

00:00:00 song one
00:01:23 song two
00:04:56 song three and so on 

To download a full album that is a playlist (like this https://www.youtube.com/playlist?list=PLxA687tYuMWhSohOX_uDBZl_RZVWCCmG8) , give bum the link to the playlist and then a text file containing the song names.

[~] $ bum https://www.youtube.com/playlist?list=PLxA687tYuMWhSohOX_uDBZl_RZVWCCmG8 names.txt

Where names.txt contains

song one
song two
song three and so on 

To download a song give bum the link to the song.

[~] $ bum https://www.youtube.com/watch?v=B_HSa1dEL9s