The additional member of the circle was Rudolf Serkin, who became Busch's duo partner at 18 and eventually married Busch's daughter, Irene.
It's the end of a week at the Jazz Standard - reprising a successful experiment at the club last year - in which a different duo partner is featured each night.
The group comprises 9 Nashville Independent Artists, including former duo partner, Sam Brooker.
Together with her duo partner, Adam Johnson, Alison has been performing repertoire both traditional and contemporary for the last 12 years.
The prestigious title "Band of the year" Zadok shared with his duo partner twice, two years in a row.
His consistent duo partner over the years has been the lutenist and singer Shirley Rumsey, with whom he co-directs the ensemble "Kithara".
He played his last concert there, together with Emma Kovarnova (his wife and duo partner for more than 40 years) as "Due Boemi di Praga."
She is a frequent duo partner with Huw Watkins whom she met at University.
Ms. Rowland, a Canadian pianist, has been his duo partner since 1980.
Gerold Huber (born 1969 in Straubing) is a German pianist, best known as duo partner of baritone Christian Gerhaher.