Table:
text: List of Doctor Who audio releases
Television soundtracks
Television soundtracks
Story_ Title Doctor Narrator Format release_date Notes
37 The Tomb of the Cybermen 2 Second Doctor Hines, Frazer Frazer Hines 2-CD 2006-05-01 1 May 2006 Bonus interview with Frazer Hines
23 The Ark 1 First Doctor Purves, Peter Peter Purves 2-CD 2006-08-07 7 August 2006 Bonus interview with Peter Purves
44 The Dominators 2 Second Doctor Padbury, Wendy Wendy Padbury 2-CD 2007-05-07 7 May 2007 Bonus interview with Wendy Padbury
27 The War Machines 1 First Doctor Wills, Anneke Anneke Wills 2-CD 2007-08-06 6 August 2007 Bonus interview with Anneke Wills

Question: What is the release date of the bonus interview with Peter Purves among the TV soundtracks of the Doctor Who audio release list?