On 18 February 2021, Frederik Valentin was a guest on Posh Isolation. Frederik Valentin has been played on NTS over 50 times, featured on 46 episodes and was first played on 29 August 2016.

He became famous as the lead-guitarist of danish hard rock/punk band Rock Hard Power Spray. His solo-projects include work done under the aliases of "El Freddie V" and Elsklivet.