The Invasion was an eight part Doctor Who story made and transmitted in 1968. Written by Derrick Sherwin (from a story by Kit Pedler) it starred Patrick Troughton as the second Doctor. At the helm was Douglas Camfield, one of popular television’s most maverick and talented directors in the 1960s and 1970s. The music was composed by Don Harper, the third Australian émigré composer (after Ron Grainer and Dudley Simpson) to work on the programme.

The master tape of the music for ‘The Invasion’ was lost soon after transmission, but Harper retained a 7½ ips ‘composer’s copy’ that forms the basis of this release. Additionally, the score was augmented by extensive use of electronic sounds by Brian Hodgson of the BBC Radiophonic Workshop.

1 Doctor Who (new opening theme, 1967)
2 The Dark Side of the Moon (Music 2 Variation)
3 The Company (Music 7)
4 Hiding (Music 8)
5 International Electromatics Headquarters (Music 3)
6 Muzak
7 The Cyber Director (Music 5)
8 The Cybermen, My Allies (Music 7)
9 Brigadier Lethbridge-Stewart (Music 12a)
10 Plans for Invasion (Music 8)
11 Mysteries (Music 12)
12 Fire Escape (Music 11)
13 The Dark Side of the Moon (Reprise) (Music 2)
14 The Cybermen, My Allies (Reprise) (Music 7, looped)
15 Music 4 (Trapped in Gas Chamber - v. 1 & 2)
16 Music 9
17 Music 10
18 Music 13
19 Music 14
20 Music 15a
21 Music 15b
22 Music 15c
23 Music 15d
24 Music 15e
25 Music 15f
26 Music 15g
27 Music 15h
28 Music 16a
29 Music 16b
30 Music 16c
31 Music 16d
32 Music 16e
33 Music 16f
34 Music 16g
35 Part of TARDIS disappears
36 All of TARDIS disappears
37 TARDIS take off slow and painful
38 International Electromatics Headquarters Exterior
39 International Electromatics Headquarters Interior
40 Computer Background
41 Computer Whirrs
42 Electronic Eye
43 Cyber Director Appears
44 Cyber Director Constant