Seventh and resolution.

Here’s the lovely bit.

Listen once, count with the click, then play the displayed pattern. Compare the two sevenths before resolving to the octave. Use the lower C4–C5 range; follow note labels for accidentals. Finger choice and key-release duration are not scored. Pattern positions count from 1; 1.5 is the & of beat 1, and 1.25/1.75 are e/a. C4 at 1; B4 at 2; C5 at 3; B4 at 4; C4 at 5; A♯4 at 6; C5 at 7. The pattern lasts 8 quarter-note beats; leave gaps silent.