MOOD SWINGS UPDATE: "Rock Gets Mellow for Mojo." Lake Highlands residents Mary Guthrie and Diane Harris, and Park Cities rez Mary Hestand, three of the members of the all-women rock band Merry and the Mood Swings, sing as a trio during Kristi Kruger's Benefit for Mojo, Saturday, May 17 at 8 p.m. at Opening Bell Coffee. Kruger, voted best female vocalist in a recent Dallas Observer poll, has invited lots of her musician friends to come help raise $ for her pup Mojo, who needs $4,000 of surgery that she cannot afford. Suggested donation $10.