530 / 18210 · Module 13 — Extensions: 9ths, 11ths, and 13ths← prev⊞ allnext →13.16G13 does not mean seven simultaneous notesA very practical G13: LH: G RH: F B E That's: root ♭7 3 13 Perfectly sufficient. Sometimes add A: RH: F A B E Now you have: 7th, 9th, 3rd, 13th. No 5th. No 11th. Still clearly G13. ← Previous13.15 What is a 13th?Next →13.17 Why omit the 11th on G13?