K-ON!

K-ON! Ann summary : It's Yui Hirasawa's first year in high school, and she's eagerly searching for a club to join. At the same time, Ritsu Tainaka, a drummer, and her friend Mio Akiyama, a bassist, are desperately trying to save the school's light music club, which is about to be disbanded due to lack of members. They manage to recruit Tsumugi Kotobuki to play the keyboard, meaning they only need one more member to get the club running again. Yui joins, thinking it will be an easy experience for her to play the castanets, the only instrument she knows. However, the other members think their new addition is actually a guitar prodigy...

KyoAni's anime K-ON

One of the coolest bass players this side of anime. She is one of 5 of the hottest selling MOE titles ever created. KyoAni, the people who brought us Haruhi, Munto and Sora no Woto created this powerhouse girl band and has been raking the cash in ever since. I didn't think it would last when it first came out, but fiercely supported it all the way. Who would have thought that a girl band anime would do so well. I'm still shocked by it's success.

All the girls are awesome. Here is Yui. Umm the main chara.

Yui is the main character of K-On!. She is one of the members of the light music club and plays a Heritage Cherry Sunburst Gibson Les Paul Standard electric guitar that she nicknames "Gīta" (ギー太?).She does not get good grades in school (though when properly coached, she can achieve astounding results) and is easily distracted by trivialities (mainly those deemed cute and adorable). Yui is clumsy and easily spaces out most of the time. Yui has shoulder-length, brown hair (a little longer than Ritsu's) which she accessorizes with two yellow hair clips, and brown eyes. She takes a huge liking for any kind of food (she practically never gains weight, which is greatly envied by Mugi, Mio, and Sawako). She has her younger sister Ui, who is the very mature and down-to-earth opposite of Yui, to take care of her and keep herself in line. Yui works extremely hard to get better at playing guitar, which is shown in later chapters.[volume & issue needed] During performances, Yui plays with amazing energy and joy, which usually results in great response from the audience.

Yui is the band's main vocalist and lead guitarist and has absolute pitch—she can tune her guitar perfectly without a tuner, which greatly impresses Azusa, who has played the guitar much longer than Yui. She has a very easy-going nature, but has incredible focus and retention when she has a clear goal in sight; unfortunately this is limited to only one subject at a time, and her other skills deteriorate quickly (for example, Yui is at one point pressed to make up failing test scores, and she quickly brings her math skills up to par while allowing her guitar skills to deteriorate.) Despite all of this, Yui is still devoted to her band and will always practice hard enough for the club. At school, she has become quite admired for her great voice. However, she is known to forget her lyrics in mid-performance as well as overdoing things, making her unable to perform sometimes. Mio was the lead vocalist at first, since Yui could not play the guitar and sing at the same time.Yui is also known to write childish lyrics as Ui has assisted her in creating them.

Azunyan is another part of HTT.

Ho-kago Tea Time 

Azuza for short. She appeared in the end of the first season.

Wiki - Azusa is a student in the same year and class as Yui's sister Ui, who joins the light music club and becomes the rhythm guitarist, playing a Fender Mustang electric guitar. She eventually names her guitar Mu, as it is a Mustang. She is a self-proclaimed novice guitarist who has been playing the guitar since she was in the fourth grade, and her parents are working in a jazz band. She often finds herself bewildered by the tea parties and cosplaying aspects of the club, when she would rather just practice, and is curious about how the club is able to play so well despite their problems and lack of practice. However, she has a certain weakness for cakes and can be calmed down rather easily, sometimes by just being petted. She is constantly a victim of Yui's skinship and is nicknamed Azu-nyan after trying on a pair of cat ears and meowing ("nyan" being the equivalent of "meow" in the Japanese vocabulary). Despite this, Azusa is not too good with cats. Azusa has long black hair, which she wears in pigtails, and red eyes.

In the band, she looks up to Mio the most due to her maturity and the fact that she is an experienced bassist, even trying to give Mio chocolate on Valentine's Day. However, she sometimes unintentionally makes remarks concerning Mio's weaknesses, such as her weight. She also finds Mugi very beautiful, and envies her hair and large eyes, and later starts teaching her how to play guitar when the two are alone in the club room. Since joining, Yui comes to her for advice on playing guitar, as well as maintenance. She gets a tan extremely easily, once during their time at the beach and another during a music festival (even after applying sunscreen). As a result, she frequently gets sunburned as well. She gets lonely very easily, and often worries that everyone in the club will leave her, as they are one year older and eventually will graduate. Due to this, the rest of the girls buy her a turtle to look after, naming it Ton. Outside of the band, she often hangs out with Ui and Jun whenever the other girls are busy. When the others graduate, she becomes the new light music club president.

Mio is still my fave though.

Wiki : The first Japanese DVD volume of the anime series sold around 8,000 copies to debut seventh in the ranking on the Oricon charts for the week of July 29, 2009. The Blu-ray Disc release of the first volume sold about 33,000 copies in the same week, to top the Oricon BD charts. In August 2009, the first volume of K-On! was the top-selling television anime Blu-ray Disc in Japan, having surpassed the previous record holder Macross Frontier, which sold approximately 22,000 copies of its first volume. It was the second best-selling Blu-ray Disc in Japan, trailing only Evangelion: 1.0 You Are (Not) Alone, with around 49,000 copies.However, in October 2009, the first volume of Bakemonogatari surpassed K-On!'s previous record, having sold 37,000 copies at that time. Later, with the release of K-On!! volume 3, total BD sales for the series have outsold Bakemonogatari. K-On! received a Best TV Animation Award at the 2010 Tokyo International Anime Fair. K-On!! won the Best Television award at the 2010 Animation Kobe Awards.