The obscure German hard rock band Baumstam was formed in late 1972 in Witten, in the Ruhr region. During numerous tours throughout Germany in the following years, there were various line-up changes. The final line-up of the popular band was: Ulrich Klawitter (guitar, vocals), Michael Lobbe (guitar), Volker Wobbe (bass) and Gerhardt Meyer (drums, percussion). They played raw heavy rock with psychedelic influences, always featuring two heavy fuzz guitars at the forefront, a sound that was unique in German rock history at the time. In 1975, they recorded their debut album On Tour over a single weekend in Witten-Annen at Lothar Simmsheuser’s Knöterich Studio, where he also served as sound engineer. It is therefore not a live album, as the title might suggest.

The private pressing was produced in a very limited run on their own BMF label and distributed by the band themselves. Following its release, numerous further performance opportunities arose, and several record labels also expressed interest in producing a further album with this quartet. Nevertheless, the band split up in 1977 due to internal disputes over the direction the band should take. The LP, which some believe even anticipates the modern genres of stoner rock and doom metal, now enjoys cult status among collectors worldwide. As the original pressing was distributed in very limited numbers, extremely high prices are paid for vinyl originals.