Elizabeth Kluegel and Lewis Freeman sing Donizetti: Don Pasquale duet, at the Rock Spring Concert series on Feb. 8 entitled “What is This Thing Called Love?” Kluegel lives in Alexandria where she has two children in the public school system and teaches voice lessons to a number of local students. Freeman is a singer of classical music and an actor on stage where he has perfomed more than 70 roles in the local area. They were accompanied by Edward Roberts, a pianist and vocal accompanist. The Recital Series, held at Rock Spring United Church of Christ in Arlington, began in the spring of 2001 as an outreach to the suburban Washington community looking for more local concerts.