Keyboard concertos by Johann Sebastian Bach soloists, were all adapted into harpsichord concertos by the composer, BWV 1058, 1054 and 1062 respectively. It is often assumed that Bach's extant violin concertos were written in his Köthen period (1717–1723): it can however not be proven from documentary evidence that any of them existed prior to around 1730. In September 1725 Bach performed organ music, accompanied by other instruments, in Dresden. The works he performed there have not been identified. More than a year later he composed several cantatas with an organ obligato part. Several movements of such cantatas were derived from earlier lost concertos, and resurfaced in
Young Voices Brandenburg Young Voices Brandenburg The Young Voices Brandenburg are a jazz and popular music choir of over 20 voices, composed of 18 to 26-year-old male and female singers. The musical ensemble is specifically auditioned from the State of Brandenburg, Germany on a two-year rotation. They have toured the United States, China, and South Africa as well as having recorded numerous highly acclaimed CDs. The group has been featured with prominent media periodicals/broadcasts such as the , Cue TV and RBB. The ensemble is conducted by acclaimed jazz and pop singer/educator . The ensemble was initiated in 2000; their first CD release