K-on volume 1
While I did not enjoy the first season of K-on, of which this volume of K-on is source material for, I rather K-on volume 1. The story is light hearted, Ritsu decides to continue the almost disbanded "Pop Music Club", Yes "Pop music". While the title "Light music club" would have done the club name more justice, as "Pop music" Implies they exclusively play "Pop Music" and that they actually practise. neither of which they tend to do, "Light" implies that they aren't as full on about music as an actual music club. If you haven't watched the anime though, the change most likely won't bother you.