Chorale Connecticut is presenting its 7th Annual Auction Saturday, April 12, 5:30 p.m., at Nest Egg Aucion Gallery in Meriden. The auction is being held to raise funds for the group’s May 17 concert, which will feature two rarely performed Mendelssohn choral works, “Gloria” and “Magnificat.” Four Connecticut opera soloists and an orchestra will also perform with the group. At last year’s auction, Col. Carl Brechlin, auctioneer, and Bill Jelf, singer, confer on several auction items.