Repeat the above exercise with chord progressions. In other words, take a favorite piece of music and count how often certain chordduration combinations occur. Update the lists of pitches, durations,...

Repeat the above exercise with chord progressions. In other words,

take a favorite piece of music and count how often certain chordduration combinations occur. Update the lists of pitches, durations,

and chances above using the data you collected. (Hint: Simply have

the list of pitches contain chord lists (see section “Adding Chords

with Lists” in Chapter 3).) Use the updated code to create different

chord progressions. Do you get anything interesting?