Available on Youtube the unreleased sides_Duck Boy/That's What You're Doing To Me. of the Boston's vocal group The Interludes.
From left to right; Bobby Berman,Ron Sorgman,Harvey Robbins and Gil Goldman.
In the 60's these demos sides never were released for a label but in the 80's the group made a private 45 with their unreleased sides.
Above, Ron Sorgman with their 45 RPM recording.
The Interlude's member Harvey Robbins is actually founder and president of the Doo-Wopp Hall of Fame of America http://www.harveyrobbins.net/id2.htm