Celebrate the Dear Abbeys’ 20th year as they perform in its final show of the semester this Saturday at Morse Auditorium (602 Commonwealth Ave.). Hear new songs from Etta James, OneRepublic, Little Big Town, The Lonely Island, R. Kelly and more. The Dear Abbeys will be selling its new CD Proclamation andsaying farewell to its three graduating seniors: Jason Kaplan, Steven Oranges and Daniel Taylor. Tickets will be sold all week at the GSU Link (775 Commonwealth Ave.) for $5 and at the door for $6. Doors open at 7 p.m.