The studio version of the song is from Jerry Garcia's amazing Reflections album. This is a 'must have' for any Deadhead - not a single disappointing track in the bunch. It sure does sound like The Grateful Dead backing him up on that version.
This song is credited to Robert Hunter on Dead.net (both words and music - possibly the only GD song with this distinction?). This song simply has to whet your appetite for more Robert Hunter, whose catalog I've always meant to explore more fully. It is such a simple and beautiful country ballad. It's just so authentic and laid back.
I remember hearing from some friends who had traveled back to see the Dead that they had gotten a hold of some blotter with roses printed on it. When the band played this song, it provided a very special moment for them.
Favorite Version:
The version off of Dick's Picks 17 from Boston Garden September 25th, 1991 stands out to me. This is not available streaming online (due to being on Dick's Picks) but there's a version from September 16th, 1991 from Youtube below that is also very good (albeit a few mistakes).
Incidentally, Dick's Picks 17 is probably tied with Dick's Picks 27 (December 16th, 1992) as my favorite Dick's Picks. Both are late era shows (with Vince no less), and might not appeal to many Deadheads as much, but I sure do wish we had more releases from this time period(which is why I wrote an open letter for the release of all 1990's era Dead recordings).
It Must've Been the Roses Song Rating on a Scale of 1-10: 9.1
Disclaimer: This is part of my blog that reviews all things Grateful Dead for fun. Music is a beautiful thing because it is so personal and subjective, so keep in mind that this is one man's opinion(read my blog manifesto to understand my Grateful Dead background a little more).