Prior to recording their next album, Wolfgang "Popo" Jäger would replace Bassist Bernhard "Bär" Uhlemann. Concentrating more on arrangement and production, Jumbo, released in 1975, presented a more polished Grobschnitt, offering an album of a seemingly symphonic style of progressive rock. As a whole, the album is different than its predecessor; the long, ambling space rock of "Solar Music" is replaced with a more precise progressive; little is left to improvisation or chance.