Things to consider when writing harmony at the piano: register, function, and voice leading.

Lessons: https://calendly.com/tedcasemusic/int...
Courses and free resources: https://pianofluency.com/

0:00 intro
1:25 tool #1 - REGISTER
3:32 overtone series rule of thumb
5:42 accompanying vocals
7:17 tool #2 - CHORD FUNCTION
10:45 tool #3 - VOICE LEADING
14:21 wrapping up