Q: Hey, what do you call a chord made of stacked fourths? Like "C,F,Bb"?
A: i think the way you called it is great. if the bass is playing F, then you can go ahead and call it "Fsus4"... if the bass is playing Bb, you can go ahead and call it "Bbsus2" or even "Bbsus2, with Bb on top" or even "Bbsus2, in stacked fourths with Bb on top, ya know?".... if C is in the bass, you can safely call it C7sus4, although that is not entirely specific in how to play it, you might want to mention that there is no G, or perhaps say something like, "C7sus4, in stacked fourths like C, F, Bb, ya know?" i hope that makes sense