More details?
During one of Mendelssohn's visits to Britain, his companion Karl Klingemann, friend of the Mendelssohn family, wrote in a letter to Fanny Mendelssohn that Felix had played her 'Easter Sonata'.
Was it composed by Fanny?
Was it a gift from Felix to Fanny?
Most scholars believe it was a gift. Some think this piece has gone lost, others think it is the
Sonate Eccossaise AKA Fantasia in F sharp minor, op. 28.
I dunno about the manuscript mystery, so, in a way, it remains a mystery even to me.
