Complex sentence: Marcie Blane, born May 21st 1944 in Brooklyn, New York is a female singer, who recorded pure pop music for the Seville label who issued a demo cut by the high school student more as a favor for a friend.
Split into simpler sentences: Marcie Blane, born May 21st 1944 in Brooklyn, New York is a female singer, who recorded pure pop music. The Seville record label issued a demo cut by the high school student more as a favor for a friend.