Dennis and Mark have been performing as a duo since their debut DUO album released in 2015. This was mainly a roots collection of their favourite Blues artists’’ Sonny Terry, Brownie McGhee, Sonny Boy Williamson, Hank Williams and many more. Mark and Dennis decided to start performing as a duo to show their influences and love of the Blues and the reason why they formed Nine Below Zero back in 1977 in the middle of the Punk, Pub Rock scene.

Mark Feltham over the years, as well as being a founder member of Nine Below Zero has become the number one session harmonica player in the UK, as well as joining The Rory Gallagher band and touring the world in the mid-eighties.   He has recently worked with Jude Law on a stage play, teaching Jude the technique of playing  the harmonica and has supported a list of artists from George Michael to Nigel Kennedy.

During the pandemic Dennis Greaves put the lockdown to good use by compiling all the analogue tapes in many formats he had in the loft and converting them to digital. The idea of DenMark was to re-record and remix all the acoustic tracks that had been made on Zed Records since 2000 and with a host of brand new tracks, make the definitive Nine Below Zero acoustic collection.