[1] Drnec was himself replaced by drummer Fred Coury, although session player Jody Cortez played on Cinderella's first official album, Night Songs.

[3] In addition to Cinderella, from 1977 through 1989 Drnec played drums for Philly-area bands Big Eyes, Psychopath, V, Horsepower, The Dead End Kids, Hide Your Daughters, Network, and Tangier.

Most recently, Drnec played in the tri-state area locally with his blues band, The DelCats, from 2003 to 2009.

From 2011 to 2015, Drnec played drums for Ever/After, an all original hard rock band featuring Reggie Wu of Heaven's Edge, bassist Buddy Cash, guitarist Mike Sheahan, and vocalist Christopher Thomas of the Denver, Colorado band Omniism.

In 2011 Drnec began a new project, 33 1/3 LIVE, which performs classic albums in their entirety using a rotating cast of the Delaware Valley's best musicians.