Bassoon Concerto in B flat major, K. 191 (K. 186e) - Concerto for bassoon and Orchestra, B flat major : Andante ma adagio (降B大调巴松管协奏曲，K. 191 (K. 186e) - 降B大调巴松管与乐队协奏曲：缓慢的行板)