I'm loving "Tari Tari", and I'd also like to recommend two non-current series - "Kimi ni Todoke" and "Sakamichi no Apolon" (aka Kids on the Slope), both of which are high school romances
"Kimi ni Todoke" focuses on Kuronuma Sawako, whose sweet demeanor clashes hard against her dark outward appearance, and Kazehaya Shouta, the boy she meets on the first day of high school. The story is cute, if a little cliche at times, but the art is absolutely gorgeous.
"Sakamichi no Apolon" focuses on a rich boy who grew up studying piano, a delinquent who likes to play drums, and the girl who has to choose between them. Everything revolves around jazz music, and while it's set in an older era, it's hard to tell which one, aside from mention of the Beatles (who obviously didn't play jazz, but their popularity does help to mark time frame). Even though it's set in an older era, the art is clean... and what really hit me on this one was the music