About Susan Cowsill
Susan Claire Cowsill is a musician, vocalist and songwriter. She rose to prominence as a member of the family band The Cowsills. After touring with Dwight Twilley for quite some time in the 1980s, she co-formed the band Continental Drifters. Since 1990, she has been with the Cowsills, along with brothers Bob and Paul. Cowsill began her musical career with the Cowsills in 1967; she made her debut on We Can Fly, the Cowsills' second MGM Records album, released in early 1968. Her contribution to the Cowsills' backing vocals made her, upon her ninth birthday, the youngest person to be directly involved in a top ten hit record when "Indian Lake" made the Top 10 in the early summer of 1968. She became known for her performance of the line "and spaghetti'd", which she sang with a squeakiness in her voice that she still uses when she performs the song live.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.