Harvey Mandel is among the most innovative guitarists to emerge from the Chicago blues scene of the late 1960s. His career began at Twist City and other local hotspots, sharing stages with Muddy Waters, Howlin' Wolf and Buddy Guy. He came up in that scene alongside Charlie Musselwhite, Mike Bloomfield, Barry Goldberg and Steve Miller, leading to an invitation from Bill Graham to open for Cream at San Francisco's Fillmore Auditorium in August 1967.

Mandel was a member of Canned Heat, appearing with them at Woodstock. He played on numerous John Mayall albums, and on the Rolling Stones' 1975 LP Black and Blue ("Hot Stuff", "Memory Motel"), having auditioned for Mick Taylor's job, which ultimately went to Ron Wood.

Who’s Calling is the 16th album under Harvey Mandel’s name as a leader, and his second for Tompkins Square following the 2016 acclaimed comeback, Snake Pit. Joined by guitarist and co-producer Ryan Jewell (Ryley Walker, Laraaji) and bassist Andy Hess (Gov't Mule, Black Crowes), Who’s Calling finds the 77 year old guitar legend as vibrant and creative as ever. Despite unspeakable health setbacks and of course a Covid shutdown, Harvey has emerged miraculously stronger, proclaiming he’s never played better than on Who’s Calling.