Lauren Sauer (born August 16, 1985) is a bassist, keyboardist, and session musician. Best known for her work in Phase 9 and synth rock band The Mercurial, Lauren has been an active member of the Long Island music scene since 2003. After parting ways with The Mercurial in 2007, she signed on with Disney Records/Warner Bros Records as bassist/backup vocalist for both Miley Cyrus (Disney's Hannah Montana) and Ashley Tisdale (High School Musical). Television appearances include "Live! With Regis & Kelly", "Good Morning America", and NBC's "Christmas In Rockefeller Center". She currently works as a studio musician and audio engineer.