The birds often give it in response to loud noises and playbacks of its vocalisations. The tapes containing these playbacks were shipped to Hollywood where Francis overdubbed her vocals. This a filmography for Ghulam Mustafa Khan's playbacks in Indian Film Industry. For example, acoustic playbacks have attracted seabirds to historic and new breeding grounds. After the playbacks, Barrett performed, on guitar, several tracks for Jones, one being "Terrapin". I heard the first playbacks and thought it was terrible. He sang playbacks in over 100 films. She has done playbacks in 5 different languages. In the 1970s, digital pattern playbacks began to supplant the earlier version. The album consisted of 12 songs, although 13 playbacks had been produced.