Frank Mertens (born Frank Sorgatz on 26 October 1961), is a German former musician.
He is a former member of the German synth-pop group Alphaville.He is known for playing the melody lines on keyboards.
Personality wise, he was a shy and quiet person who doesn't like to talk.Shortly after the success of their debut album, he left the band in December 1984, because he had a stress with the public attention.After he left, he founded the group "Lonely Boys" with his girlfriend at the time Matine Lille (real name: Martina Richter) and Felix Lille (real name: Felix Schulte), But, in 1987 he disbanded the group and studied economics (finished in 1990).In 1991, Mertens moved to Paris where he studied art (self study) in order to complete his project and back to Cologne, Germany in 1996 where he works as a plastic artist and lives reclusive.During the same year, he started but never completed a musical project called Maelstrom, which was a combination of ambient-style music, impressionistic and colorful art in the form of paintings, sculptures and etheric poetry.