TRIBUTE: Noise Pop and Wax Poetic magazine pay tribute to Don Cornelius at tonight's Pop-Up Shop, featuring a music and visual celebration of the iconic Soul Train host, who introduced generations of viewers to new music and dance trends emerging from black America. (6 p.m., Noise Pop-Up Shop, 34 Page Street)

MUSIC: The San Francisco Bluegrass & Old-Time Festival is in full swing, and they're featuring a Hump Day Bluegrass event at Cafe Du Nord with a line-up that includes The Trespassers, Windy Hill, Snap Jackson & The Knock On Wood Players, and BrownChicken BrownCow StringBand. (8 p.m., Cafe Du Nord, 2170 Market Street)

ART: U.C. Berkeley's the Worth Ryder Art Gallery presents artist Edgar Heap of Birds' latest exhibition, Dead Indian Stories :: Personal Notes, featuring 16 monoprints from his recent series "Dead Indian Stories" and 16 monoprints from "Personal Notes" which offer an "introspective counterpoint against the former's political activism." The artist will be giving a lecture tonight, which is preceded by a short film about Wheel, 2005, installed at Denver Art Museum. (7 p.m., 160 Kroeber Hall, U.C. Berkeley)