15: Elgar's 'The Apostles' and 'The Kingdom'
 19: It doesn't happen often
 28: Like the least convincing excuses
 38: Chimney sweep's target
 61: Responded to reveille
 66: Like Schubert's music, e.g.
 68: Responds correctly on 'Jeopardy!'
 71: Toddler's constant question