| Series cast summary: |
 | Jon Anderson | - | Himself 1 episode, 1970 |
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 | Peter Banks | - | Himself 1 episode, 1970 |
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 | Ritchie Blackmore | - | Himself 1 episode, 1970 |
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 | Bill Bruford | - | Himself 1 episode, 1970 |
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| Brian Blinky Davison | - | Himself 1 episode, 1970 |
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 | Deep Purple | - | Themselves 1 episode, 1970 |
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 | Keith Emerson | - | Himself 1 episode, 1970 |
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| Rod Evans | - | Himself 1 episode, 1970 |
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 | Rory Gallagher | - | Himself 1 episode, 1970 |
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| Keef Hartley | - | Himself 1 episode, 1970 |
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| Lee Jackson | - | Himself 1 episode, 1970 |
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 | Tony Kaye | - | Himself 1 episode, 1970 |
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 | Jon Lord | - | Himself 1 episode, 1970 |
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| The Nice | - | Themselves 1 episode, 1970 |
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 | Ian Paice | - | Himself 1 episode, 1970 |
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 | Chris Squire | - | Himself 1 episode, 1970 |
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 | Yes | - | Themselves 1 episode, 1970 |
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| Andrew Bown | - | Himself - Musician 1 episode, 1971 |
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| Charlie Harrison | - | Himself - Musician 1 episode, 1971 |
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| Hilmar Hoffmann | | 1 episode, 1971 |
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| Allan Jones | - | Himself - Musician 1 episode, 1971 |
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| Walter Schmieding | | 1 episode, 1971 |
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| Werner Schwier | | 1 episode, 1971 |
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| Henry Spinetti | - | Himself - Musician 1 episode, 1971 |
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| Adrian Williams | - | Himself - Musician 1 episode, 1971 |
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| Trevor Williams | - | Himself - Musician 1 episode, 1971 |
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