Zumbo has 15 GRiZ concerts.

GRiZ is a Michigan-born electronic music producer and musician who has attracted an enormous live following, regularly playing major festivals and selling out headlining tours. Referring to his music as "future funk," GRiZ produces glitchy, energetic tracks with booming dubstep bass and elements of jazz, hip-hop, and soul. Born Grant Kwiecinski in Southfield, Michigan in 1990, he began playing alto saxophone and piano as a youth, and dropped out of Michigan State University in order to pursue a career as a musician.