Basic, school-girl plot with adorable and charming characters. Fun and spirited. All four girls are silly and easy to enjoy. The rendering of the instruments is amazing. Music is fairly good, too. I loved the first 8 episodes, at least until Azusa arrived. Her character is completely inconsistent, swinging between cranky, nasty child and stoic bitch. She regularly insults the K-On girls while simultaneously begs for more of their music. She is emotional and whiney. The dynamic between the other girls also seems to change for the worse; not as appealing as they were. The first half of the series is worth watching for the fluff, moe, and sweetness.