There were many gasps and comments about how she made it seem effortless. Hardly surprising one was left thinking that this young woman was born to sing. Bravo Alexandra.
Samoan baritone Samson Setu who sang an aria from Cosi fan Tutte by Mozart delighted the audience with not only his rich voice but his infectious personality.
His face aptly expressed the richness of the character, who was a womaniser and arrogance personified.
One difficult passage that Jones had him repeat several times to get the breathing right, nearly had Setu toppling on to the piano with giggles.
The four students in the master class, which also included tenor Manase Latu and mezzo soprano Cecily Shaw, received thunderous applause.
Accompanist (repetiteur) David Kelly was also hugely applauded as one of New Zealand's foremost musicians.
Jones said they didn't come better than Kelly.
"He is truly exceptional believe me. He is a huge asset and a wonderful man to work with.''