what do you call that chord when, say in the key of C, you have F in the bass and in the melody you have B (and G) resolving to A (and F)? Can you ever call that Fsus2add#11 (or #4?), also what if the 5 isn't included (is it included usually?), thabks (it's like a double suspension methinks)
Fsus2b5 is the most efficient way i can think of. If you are in a world where F2 is understood to mean Fsus2, then, F2b5 is definitely the way to go. If i were writing it on a chart for myself personally, i would say F2#4, and i know maybe that means 5 is allowed when it's not there, but, seeing that i would probably get that i'm supposed to focus on the 2 and #4. And also, if the next chord is F, then i think as a reader i'd easily pick up on the movement that's implied. As you can see, charts can be a lot of approximation and guessing games. Now that i think about it, writing words and sentences is like that too sometimes