besides the turtle island quartet, which has released fifteen albums, summer has played with many other crossover artists. he was a member of the jazz chamber trio with the pianist alon yavnai and the grammy-winning clarinetist paquito d'rivera which played primarily latin jazz. he has also composed pieces for solo cello, including "kalimba" and "julie-o", (both the solo and duo versions), the last of which has become very popular among cellists and was included in a 2015 advertising campaign for the apple watch. he has also arranged pieces for solo cello including "lo, how a rose e'er blooming" and jimi hendrix's "little wing". he currently performs in a trio with 7 time grammy winning jazz vocalist tierney sutton and is featured on 4 tracks of ms. sutton's grammy nominated recording, "afterblue".