The Mamas & The Papas are members of The Rock And Roll Hall Of Fame. They were a pure pop group with excusite vocal harmonies. John Phillips was one of the better producers who combined the four voices into a virtual choir.
“Monday Monday” was the follow-up release to their first big hit, “California Dreamin.'” Released April 9, 1966, it was their only number one hit as it topped the BILLBOARD MAGAZINE Pop Singles Chart for three weeks.
Very early releases of the single came with a rare black and white picture sleeve and a different B side. The sleeve is worth in the $500 neighborhood.