From all the summery pop music on this site, think you'll love this song from the Californians Call and Response about the simple joys of rollerskating.
You can download it for free (and legally) from http://www.epitonic.com/files/reg/songs/mp3/Call_And_Response-Rollerskate.mp3 so why not give it a listen.

The Crimea are the current guise of 90's Welsh indie band The Crocketts, who were pretty rubbish and best forgotten. However, this song, which I think was their first single as the Crimea, is fantastic. It has a great summery feel thanks to some steel drums, goood weird lyrics, and thanks to Davey Crocketts always ammusing fake American singing voice sounds like its come straight from 60s California. This is the only song I've heard by the band since they became the Crimea so not sure whether it's a one-off or they really have improved since the days of the Crocketts (Aberystwyths most famous band!).