I'm going to preface this review by saying that I don't really enjoy slice of life a lot of the time. I find it to be rather tedious and boring knowing that what happens in each episode will not progress the "plot" forward in any meaningful way and is instead focusing on characters interacting with each other for the sake of what the viewers want. I hate this type of storytelling unless it's implemented really well within a plot AND has meaning aside from catering to supposed needs. K-On is an exception to this rule. Through the use of several elements, K-On manages to captivate a plot-focused viewer such as myself and deliver what I find to be really enjoyable storytelling. While it may not be my first choice of anime due to some elements of the genre that still prevail here, K-On is my first pick for a nice, easy slice-of-life to watch.

Plot:
For a comedy slice-of-life show, K-On's plot is in the upper echelon for the genre. Unlike other shows, K-On's episodes don't feel like one-offs that are meant to solely be funny and wholesome, though the certainly are. I feel like each episode contributes to an overall story that is going on. For example, when we see Yui come into the club for the first time, she doesn't know a castanet from a maraca. However, as the series goes on, we see her slowly but surely learn how to play the guitar, how to read music, and how to sing. By the time Episode 12 rolls around, you see her preform on stage with such confidence and vigor that you may ask yourself if it's the same Yui as episode 1. This example, and many others, captivate a sense of progression and time that not many other slice-of-life shows manage to do, or even try. For me as a viewer, this is why K-On is so good: it doesn't make me feel that I'm wasting my time watching cute girls being cute, but that I'm seeing all of these characters grow into something better than they once were.

Characters:
The characters in K-On are really strong, the main quartet (later quintet) of Yui, Ritsu, Mio, Tsumugi, and Azusa provide a really strong dynamic in the comedy and wholesomeness the show offers. I also like the sub-dynamics the group has, like Ristu and Mio antagonizing each other, Yui and Ritsu being energetic and optimistic, and Azusa and Mio being kind of the straight men for Yui and Ritsu. Of course aside from jokes, these characters are very friendly towards each other and care deep down. In Episode 11 we see Ritsu and Mio get into the most serious fight of the show, and they are not happy with each other. Mio believes she's at fault due to Ritsu not coming to practice for a few days, so Mio goes to Ritsu's house to check on her. Inside, we see that Ritsu was actually sick with a cold and Mio makes it clear that she's not upset with Ritsu for not coming to practice. It's a very wholesome make-up scene that shows a bit of depth to the relationship these two have with each other. I like it a lot and it's leagues ahead of other relationships in comedy shows I've seen.

Art:
I'm not much of an artist so I won't say a lot here, but the art for K-On is pretty appealing to me as a viewer. I like how characters can go from serious to light-hearted in the beat of an eye and how the change in artstlye reflects that shift well.

Music:
Perhaps K-On's strongest asset is the OST. This is a show about music and K-On delivers on the OST. Many of the tracks reflect the mood and tone for the scenes well, and are just really pleasant to listen to. I like the use of different styles of music within the OST as well, such as jazz and rock music.

Overall Thoughts:
K-On is a Slice-Of-Life comedy show that has cute girls doing cute things. However, if that's all K-On was I wouldn't be taking the time to sing praises about it. K-On has a lot of depth for a show of this genre that I've yet to see anything remotely close to matching from the herd. It has dynamic character relationships with depth, a killer OST, and most importantly a plot with continuity that matters. I think K-On is an excellent show for this genre and would recommend to anyone looking to get into the genre or for something nice and soothing to watch.