180: Petra

<p>Bob Hartman is one of the original members of the band PETRA, dating back to 1972. We’ll talk early beginnings, album cover art work, changing lead singers, and what Bob is up to now.</p><br/><br/>Advertising Inquiries: <a href='https://redcircle.com/brands'>https://redcircle.com/brands</a><br/><br/>Privacy & Opt-Out: <a href='https://redcircle.com/privacy'>https://redcircle.com/privacy</a>