^{page 47 note 1} Commissioned by the London Sinfonietta with help from the Calouste Gulbenkian Foundation, and first performed at the Queen Elizabeth Hall on February 12 1969, conducted by David Atherton.

^{page 47 note 2} First performed by Alan Hacker at a Redcliffe Concert of British Electronic Music at the Queen Elizabeth Hall on February 10 1969.

^{page 50 note 1} Commissioned by the Royal Philharmonic Society, in association with the Calouste Gulbenkian Foundation, and first performed by Gervase de Peyer with the BBC Symphony Orchestra, conducted by Colin Davis, at the Royal Festival Hall on February 5 1969.

^{page 54 note 1} Commissioned by the BBC for their Lancaster Music Weekend and first performed at the Ashron Mall on February 23 1969 by the BBC Northern Symphony Orchestra conducted by Norman Del Mar.

^{page 55 note 1} First performed at the De Montfort Hall on February 16 1969 by the BBC Training Orchestra conducted by Walter Susskind.