The incipit of a hymn tune consists of its opening notes. Here, as in the Oxford Hymn Tune Index and other scholarly resources, an incipit is encoded by digits, each digit representing one note of the scale. Thus, for a major scale:
The "key" of a minor tune is "la" on the do-re-mi scale, so 1 represents "la", 2 = "ti", 3 = "do", etc. Similarly, for a Dorian-mode tune, 1 represents "re", 2 = "mi", etc.
Put another way, we use a movable "do." All scales, major or minor, start with 1.
The Oxford Hymn Tune Index lists the first fifteen notes of the "melody" (usually the soprano part for modern tunes, but sometimes the tenor part for older arrangements).
Note: enter incipits without spaces.
"Amazing Grace" (NEW BRITAIN)
513132165513132
"The God of Abraham Praise" (LEONI)
512345345675234