Steve Miller says it was used by the guy in his band who played the Jungle Love riff, an all-time favorite of mine.
I found accurate tab (a rarity!) for Jungle Love once, and it said "A# tuning" with that tuning.
Made sense to me, the 4th (A#) being the implied chord pitch, and with its major third added (D), we have a form of A# major spelled on the top 4 strings, right? But I don't really know, and I never knew what "sus"pended meant musically
I transposed that song to standard tuning, and it is one hard sumb!tch to play that way
I really should take a lesson or a class....I guess I don't want to buck a 25-year trend of no lessons--or else I'd rather remain blissfully ignorant
Re: nifty little alternate tuning for you cats to try on yer git-fiddles
it means suspended....raised up. so if you have a sus4...it means that it doesn't have a 3rd but it was raised up to a 4th. if it was add4, you would still have the third