Complex sentence: Morrison was dissatisfied with the addition of female vocalists to the choir, and these changes and others have led Morrison to regard "His Band and the Street Choir" poorly in later years, even though it achieved high positions in the charts and elicited good reviews.
Split into simpler sentences: Morrison was dissatisfied with the addition of female vocalists to the choir. These changes and others have led Morrison to regard "His Band and the Street Choir" poorly in later years, even though it achieved high positions in the charts and elicited good reviews.