Mellotronists

More Klaatu trivia:
The Carpenters version of "Calling Occupants" - Arrangement by Peter 
Knight (Days Of Future Past)

The morse code message at the end of Sub Rosa Subway decoded:
From Alfred, heed thy sharpened ear
A message we do bring
Starship appears upon our sphere
Through London's sky come spring.

Little Neutrino: The vocal effect - Moog Sonic V synthesizer (John) 
though an Artificial Larynx (Dee).  The Cello, flute and bass sounds 
are all Moog Sonic V.  The 4th member of Klaatu, Terry Brown had his 
way with this track!