Regenundmild, also known as Nachtwandler, is a German hip-hop group formed in 1994 by Patrick "John" Ruhrmann, Christoph Riebling, and Jens Klingelhöfer. The trio from Idstein initially gained attention with their appearance in the television film Natalie – Endstation Babystrich in 1994. They released their debut album Im Bann Des Plattenspielers in 1999. The group's career took a significant turn when John Ruhrmann secured an internship at Moses Pelham's 3p label. This opportunity allowed them to produce tracks for artists like J-Luv and Cassandra Steen, leading to the establishment of their independent label, Musik Für Massen. In 2004, they released their first album under the name Nachtwandler, titled Zurück in den Wald.
