Complex sentence: Soon Valentin was performing regularly in the cabarets and beerhalls of Munich, and developed a reputation for writing and performing short comic routines, performed in a strong Bavarian dialect', usually appearing with his partner, Liesl Karlstadt.
Split into simpler sentences: Soon Valentin was performing regularly in the cabarets and beerhalls of Munich. He developed a reputation for writing and performing short comic routines, performed in a strong Bavarian dialect, usually with his partner, Liesl Karlstadt.