Focus – Hamburger Concerto (Live, 1975)
Thijs van Leer — keyboards, organ, flute, piano, vocals
Jan Akkerman — guitar
Bert Ruiter — bass guitar
Colin Allen — drums

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Frank Carmack5 months ago: Jan Akkerman used a customized Leslie cabinet as one part of his amp rig. There are usually switches which let the artist switch between either thr Leslie, which has its own self contained amplification, and/or standard amp stack. I didn’t recognize the name of his other amplification, but its probably custom work as well. Thjis van leer used a Leslie with his Hammond M-100 or comparable model. …

// https://de.wikipedia.org/wiki/Focus_(Band)

Focus – Hamburger Concerto – Live BBC TV 1975
—> https://youtu.be/6WMJsozf9eU