Just seen this on play.com don't know how good it is seen a video on youtube and it looks good if you travail regularly.
The Guitar Hero Carabiner is the pocket sized version of the monster computer game! The better you play, the higher you score. The song selection is based on the best from Guitar Hero I and II and is loaded with 10 songs from the video game. 5 midi tone note buttons. Foldable neck for portability. LED screen. Whammy bar for long notes.
I know you can get Guitar Hero for Ds but not everyone has a Ds.
also play.com except quidco.