Dehm performed as a singer-songwriter in the 1960s under the pseudonym
Lerryn, a
portmanteau of his nickname,
Larry, and
Lenin. In 1971, he founded ('Songs in the Park'), a summer festival showcasing singer-songwriters, and organised ('Rock Against the Right Wing') events. Dehm produced, wrote and played on Dutch folk rock band
Bots's album ('Stand Up'). Included on the album is , the German version of Bots's best-known song, ('Seven Days Long'); the translation was done by Dehm and
Günter Wallraff. Dehm, using the pseudonym
N. Heirell, collaborated with
Klaus Lage to write the song ('1000 and 1 Night'), In 1988, Dehm wrote a new party anthem for the SPD, titled . In the 1990s, Dehm wrote the screenplay for the musical film , starring
Katharina Witt; Dehm had been Witt's manager for a time. == Stasi activities ==