Introduced by NORMAN CARRELL It was long thought that Bach's solo harpsichord concertos were all based on works by Vivaldi, but other models have recently been identified, including Johann Ernst , a duke who died in 1715 at the age of eighteen. PHILIP LEDGER (harpsichord and organ) JÜRGEN HESS (violin) LONDON BACH ORCHESTRA led by DUNA CUMMINGS conductor MARTINDALE SIDWELL Johann Ernst Violin Concerto in B flat, Op 1 No 1 Johann Ernst/Bach Concerto No 11, in B flat, for harpsichord (BWV 982); Concerto No 1. in G. for organ (BWV 592); Concerto No 16. in D minor, for harpsichord (BWV 987) Johann Ernst Violin Concerto in D minor, Op 1 No 4