A BBC World Service interview with countertenor Andreas Scholl, wherein he discusses Purcell interpretation and exhorts the listener to go find Klaus Nomi videos on youtube, may be found here.
A World Service interview with sitarist/vocalist Shujaat Khan about his album with Asha Bhosle here.
An NDR interview, in German, with mezzo Maite Beaumont (JDD's Alcina's Ruggiero) here.
Late addition: James Levine on Fresh Air here.
Even later addition: 5 Minutes with Jeanette Winterson, where...Tosca?...Really?