Music from John Peel's Sessions - over a thousand from which to choose.
Andrea Bocelli concert from the Duomo Cathedral, Milan on Easter Sunday - watch on YouTube
Musicals - sponsored by but not necessarily by Andrew Lloyd Webber - Fridays . Each show is only available for 48 hours only.
They claim to still be there but no show currently available.
Free opera performances - picks from The Guardian
Shakespeare on BBC iPlayer (10 plays available as of 11 May 2020)
doesn't seem to have any more plays available.
Cirque du Soleil
60-Minute Special premiering 10th April