19.3Think in numbers

In C:

C D E F G A B

becomes:

1 2 3 4 5 6 7

If a melody is:

1 1 5 5 6 6 5

you can immediately transpose it.

In G:

1 = G

5 = D

6 = E

so:

G G D D E E D

Numbers make melodies portable.