Jeff Mattson (guitar, vocals) is a master of eclectic styles. Lead guitarist for Dark Star Orchestra, and the Donna Jean Godchaux Band w/ Jeff Mattson, Jeff is a founding member of the legendary jam band, The Zen Tricksters. In-between, he plays with DSO band mate Rob Barraco in a side project called Mattson/Barraco & Friends. See more at www.darkstarorchestra.net

A portion of profits from the sale of Jeff Mattson's strings go to the Rex Foundation: The Rex Foundation aims to help secure a healthy environment, promote individuality in the arts, provide support to critical and necessary social services, assist others less fortunate than ourselves, protect the rights of indigenous people and ensure their cultural survival, build a stronger community, and educate children and adults everywhere. See more at www.rexfoundation.org