Name the Artist: Jammin' Me?

Questions

Which English word can describe both a type of fruit pie and one who mends shoes?

According to legend, what was the name of Paul Bunyan’s blue ox?

What nickname was legally added to the full name of boxer Marvin Hagler?

Which popular TV night show host wrote ‘Leading with My Chin”?

What does the “B” stand for in the automobile company B.M.W.?