- Krumhansl & Kessler (1979) key profiles
- used probe-tone method: judged "fitness" of tones following a key-defining context
- major & minor key profiles correlate well with distribution of scale degrees in large sample of works
- tones that score high in the key-profile are rated: (1) more stable, (2) more pleasing
- tones that score high in the key-profile are (1) more likely to end a piece (finalis), (2) more likely to terminate a phrase