The recording of "Guitar Blues" by Johnny St. Cyr was made on April 2, 1949, at his home in New Orleans, Orleans Parish, Louisiana, United States. This session was recorded by Alan Lomax, capturing it on reel-to-reel tape, specifically marking the recording as Tape number T996, Track Number 3, with an Archive ID of T996R03. This recording is part of a broader session conducted in April 1949, focusing on interviews with Cyr, a prominent guitarist and banjo player.