The grandson of Russian composer Sergei Prokofiev has created a new symphony inspired in part by rapper Sir Mix-A-Lot's classic track Baby Got Back. London-based Gabriel Prokofiev will premiere his new composition with the Seattle Symphony Orchestra in Washington this summer (14) and Sir Mix-A-Lot will be a special guest. The piece is part of a music series titled Sonic Evolution, which commissions new orchestral work inspired by Seattle's music icons. Previous events have featured music inspired by Alice in Chains, Kurt Cobain and Jimi Hendrix. Prokofiev tells theQuietus.com, "When I got the list, the one person who hadn't been done who I thought was really interesting was Sir Mix-A-Lot. He's a '90s rapper; he's quite humorous and a fun guy. So I'm orchestrating two of his most famous hits, and he's actually going to rap on stage with orchestra." The new piece will have its premiere on 6 June (14) at Seattle's Benaroya Hall.