It has been claimed that in 1971 Delia produced 14 tracks of electronic music for the British record label Southern Library of Recorded Music, published as Electronic Music with catalogue number MQ/LP 38 under the pseudonym Doris Hays. The other four tracks on the album are credited to John Matthews, claimed to be John Baker and included on the album "The John Baker Tapes".
- "Toys and techniques" 2010 blog article: "Doris Hays/John Matthews"
- Justin Spear speaking on the radio programme "Stuart Maconie's Freak Zone" on Sunday 12 June 2005
- Doris Hays' entry at discogs.com