Original sentence: Recent speculation suggests that Anna Magdalena Bach may have been the composer of several musical pieces attributed to her husband.Together they had thirteen children during the period between 1723 and 1742, seven of which died at a young age:
Edited sentence: Recent unlikely speculation suggests that Anna Magdalena Bach may have been the composer of several musical pieces attributed to her husband.Together they had thirteen children during the period 1723 to 1742), seven of which died at a young age: