James A. Kremens and his wife, Laura E. Nelson, sold a condo at 135 Prospect Park SW in Windsor Terrace to Keith and Jong Weiss for $780,000 on June 24.

Unit #D11 is in the six-story condominium building, which was built in 1929.

Kremens is a composer and songwriter for films and television commercials.

He is a graduate of Colgate University.

Nelson has served as vice president for corporate communications at Comedy Central.

She is a graduate of Boston College.

There were 63 home sales in Windsor Terrace in 2008, with a median sales price of $330,000.