“Expelled from the order for impure desires, Klingsor’s domain is an Islamic hall where he keeps a secret stash of crosses above, perhaps trophies for every knight Kundry has seduced. At the very least, it’s a room of penitential flagellation and a treat to see robust Australian bass Derek Welton in a brilliant Bayreuth debut, mining the villainy of his character in acting and voice while projecting the text with meaning and expression.”

“Baritone brilliance. Derek Welton gives a stand out turn singing Martinu.”

“The new Klingsor of the powerful-voiced Derek Welton stands out from the cast.”

“Derek Welton made a terrific demonic entrance as Klingsor. With shaved head, black beard and a similarly coloured voice”

“With striking timbre and strong stage presence, Derek Welton is a splendidly disingenuous Klingsor.”

“Similarly impressive, the Australian baritone Derek Welton in the role of Saint-Bris, absorbed in the ecstasy of his barbarism”

“Derek Welton sang a beautiful-sounding Heerrufer…[and] was on par with the rest of the star cast.”

“Derek Welton was a convincing Heerrufer with an attractive Heldenbaritone timbre and striking declamations.”

“Deutsche Oper Berlin came up with a very good ensemble performance: Derek Welton as passionately potent, big-voiced Jaroslav Prus and also vocally a genuine opponent of Marty.”