Four musicians (Padilla, Cecil, Cabebe, and Melon; all age 13-15 at the time) were selected and the group was originally developed as a Go-Go's cover band called the Po-Go's.

[13] On September 22, 2009, KSM released their debut album Read Between the Lines, which was written and produced by Matthew Gerrard and Robbie Nevil.

[18] In October 2010, lead guitarist Shae Padilla formed a new hard rock band called Rixy Fisk, which briefly included Shelby Spalione (no longer using the "Cobra" stage name) on vocals.

[citation needed] Spalione released the dance-pop single "Overrated Friday" under the name Lio in late 2011 and again under the name Shelby in early 2012; she has also performed with will.i.am.

[23] Rhythm guitarist Katie Cecil had been a child actress before KSM, and earned small roles in the TV series Medium, Criminal Minds, and Help Me Help You.