Déjà Vu is the second studio album by American folk rock group Crosby, Stills & Nash, and their first as a quartet with Neil Young. Released on March 11, 1970, by Atlantic Records, it topped the Billboard 200 chart for one week and generated three US Top 40 singles: "Woodstock", "Teach Your Children", and "Our House". It was re-released in 1977 and an expanded edition was released in 2021 to mark its 50th anniversary. No. 1 on the Billboard 200 for 1 week, from the issue of May 16, 1970. Wiki link