according to the rules you are correct.
.Album Multiball is a 3-ball round. The first Album Multiball is qualified by completing 3 target banks (you do not have to do 1 of each, you can do 3 T-N-Ts if you want).
best to read the rules because I am not the best understand of the rules myself and there is a lot of nuance.
for example each shot (in the song for example TNT shots for TNT song) will add 2% to the value of the next shot cumulatively (until you drain or change the song) if you hit 5 lit 'note shots' it'll add a permanent 6% that will be added to every shot for the entire game.
You don't really need to know or understand this except to know that the more shots you make the subsequent shots are worth progressively more. And reset to base points after you drain (except for the permanent units which carry over).
Say you are playing TNT that is the TNT targets and that song in the jukebox is flashing and if you hit a lit shot such as Left ramp that will count as Rock and Roll Train and will light that on the Jukebox, Left Orbit will could as War Machine and light that on the jukebox and so on. Once you get at least 8 not counting the song you are playing you will be able to change the song (left orbit to lock in Juke box hole).
You get all the points are added to your score but they are also added to a song jackpot that is collected from the cannon shot when lit. It will reset if you collect so some might not collect if it's small and wait for it to get larger or if you can double or tripple the Pf value (by hitting the bell a number of times) before collecting. If you drain before you collect tho the jackpot resets.