Simplify the following text for a Grade 12 native English-speaking person.
Original: Popol Vuh was a German Krautrock band founded by pianist and keyboardist Florian Fricke in 1970 together with Thomas Farren ( vocals ) Holger Trulzsch ( percussion ) John Leighton ( vocals ) and Frank Fiedler ( electronics ) .
Simplified: Popol Vuh was a German Krautrock band that was founded by pianist and keyboardist Florian Fricke in 1970 together with Holger Trulzsch ( percussion ) and Frank Fiedler ( electronics ) .