HALF-SPEED MASTER. BLACK VINYL LP
"Knock Knock is the seventh studio album by Bill Callahan, released under his Smog alias. It was originally released through Drag City in January 1999. Heather Phares of AllMusic gave the album 4.5 out of 5 stars, calling it 'Bill Callahan's subtlest collection of songs yet.' She added, 'It's a moving album on many levels; not only do the songs have Smog's usual emotional intimacy, their subjects move away from difficult, claustrophobic situations toward maturity and acceptance.'"