HI ,Tomo, I just don't understand what does A7(13) Function as in lesson TFO L01 (041) Kyoto Part 1 time at 05:40 . and another question is ,are you take A flat major 7 as Fm7 ? thank you ! 😊
Great question! Thank you for asking, That is "Sub-V" resolve by 1/2 step.. so original chord is Eb7... tritone subs.
AbMaj7 is AbMaj7 ,,,,, yes it can be F-9 if you hear that way. But in this song.. AbMa7 is acting like a new key.
https://tomovhxtv.vhx.tv/videos/tf-backing-track-03
https://tomovhxtv.vhx.tv/videos/tf-lesson-041