Junior Wells with Otis Spann, Buddy Guy (on sixe tracks), and Louis Myers (on 2 tracks), recorded Dec 30th, 1969 and Jan 8th, 1970.

This was Spann’s last session before he died in 1970.

We have tried to capture on this album what a listener would hear any Monday night at Theresa’s blues bar at 48th and Indiana o Chicago’s South Side. The Blue Monday regulars, including Buddy Guy . . . are joined by the late Otis Spann, the greatest blues pianist of his generation, making his last studio appearance and to whom this album is respectfully dedicated by Junior, the musicians, and – The Delmark Staff”

My copy, via Electric Fetus in Minneapolis MN, is a 1990 reissue on blue Delmark labels with an insert advertising “best selling CD titles” with barcodes.