Moumtzis is a founding member of independent record label Louvana Records, and the artistic director of Fengaros Festival, Fengaros Music Village and Lefkosia Loop Festival. With a career spanning for more than twenty years, Lefteris has produced acclaimed solo and band recordings. His albums with Trio Tekke represent milestones of contemporary Greek rembetiko music, while his records as J.Kriste, Master of Disguise our a perfect blend of 70's folk and contemporary Greek composition. He is noted as being responsible for developing Cyprus’ independent, original, live-band, popular music scene both through his own releases and through supporting budding musicians on the island in creating a live-show music culture. His latest release 'Beaming Light' was met with multiple positive reviews from internationally renowned press outlets.