Most Bach scholars believe his well-known "Toccata and Fugue in D Minor" was written here between 1703 and 1709.

It is a monumental task Mr. Koopman has set himself, and the results are sure to prove invaluable to Bach scholars and enthusiasts.

Many senior Bach scholars have ridiculed the whole idea (though none have managed to refute it convincingly).

He has powerful support from the leading Bach scholar of the day, Christoph Wolff, who was brought in by Carnegie to speak at the workshop.

The work has fascinated Bach scholars because of questions about its provenance.

In 2001, John Butt, a noted Bach scholar, was appointed to the Chair.

Laurence Dreyfus, a Bach scholar and viola da gambist who is at the forefront of historical performance today, is troubled by the latter possibility.

Such respected Bach scholars as Daniel Melamed and John Butt (musician) have argued in its favor.

However, Bach scholars reattributed the piece to his cousin, Johann Ludwig Bach.

Bach scholars believe that this concerto was originally in d minor for two violins or violin and oboe with orchestral accompaniment.