How are scales and chords notated differently in TAB? Scales always have many numbers on the lines, while chords do not. Scales are notated from left to right, while chords are aligned vertically. Scales indicate fret numbers in TAB, while chords indicate finger numbers. Scales indicate finger numbers in TAB, while chords indicate fret numbers.

I'm honestly am little confused on which instrument your preferring to. If ur preferring to a guitar, then  best believe i got your answer.

Explanation:

There are normally some more notes to memorize, but it is never the less the same kind of logic. The difference between chord and scales are in simplifying terms. The chords are in general consisting of fewer notes. The chords are to make the harmony, while the scales are to make the melody.

I hope this helps ya out. :)