The song tests are:
Program 1: Sample from problem statement
Program 2: Sample from problem statement
Program 3: Chirp at end of song
Program 4: Chirp at beginning of song
Program 5: Consecutive chirps
Program 6: Consecutive chirps - different time boundary
Program 7: Expanded sample from Song 2
Program 8: Expanded sample from Song 2, 1 second earlier.
Program 9: Expanded sample from Song 2, 1/3 sec earlier