A "must-read" on this issue is RUPTURE AND RECONSTRUCTION: THE TRANSFORMATION OF CONTEMPORARY ORTHODOXY, by Haym Soloveitchik Published in Tradition, Vol. 28, No. 4 (Summer 1994)
They say the 12 tribes each had a different nusach of tefilla, and each had its own customs.==================So I've heard - but who actually says it (i.e. what is the earliest source?)KTJoel Rich
I recall it being brought down in the into to Tehillas HaShem (Lubavitch). I don't recall the makor, though.
http://osdir.com/ml/culture.religion.jewish.avodah/2006-06/msg00136.htmlAhS OCh 68:3
sorry for my lack of clarity (as you can see I was part of that avodah discussion) - aiui the ah"s wasn't claiming the shvatim had different nuschaot, just that differences in minhag should be respected wherever they originate from becaise diversity is ok. I wanted to know if anyone actually claims the shvatim had different nuschaot.KTJoel Rich