Weeks 7-8 · ear
Sing the first 5 degrees up and back down.
Why this matters: Do-Re-Mi-Fa-Sol covers the working range of most folk and pop melodies. Once it sits under your voice, you can read by degree without searching for each pitch.
10 patterns. Each starts with a 1-3-5-3-1 arpeggio, then a model of the pentachord up and back down. Sing each of the 9 notes within ±50¢ for 2.0s. Hit 8 of 10 to pass.