You could try:
_BGWLZFD.STY.
Memo: All RealTracks: fiddle, fingerpicked & strummed acoustic guitar, acoustic bass & mandolin. All instruments are BluegrassWaltz Ev 140. No drums. Intended as background for singer. -Examples: Nights in White Satin, Iris
_BGWLZFD.STY. Bluegrass Waltz w/ Fiddle
All RealTracks. Quintet. Tempo=140 (130-160)
Instruments: Ac.Bass, Mandolin, Fiddle, Ac.Guitar, Ac.Guitar
RT1110: Mandolin, Rhythm BluegrassWaltz Ev 140 , Jason Roller
RT1106: Bass, Acoustic, BluegrassWaltz Ev 140 , Byron House
RT1107: Fiddle, Background BluegrassWaltz Ev 140 , Stuart Duncan
RT1108: Guitar, Acoustic, Fingerpicking BluegrassWaltz Ev 140 , Pat McGrath
RT1109: Guitar, Acoustic, Strumming BluegrassWaltz Ev 140 , Pat McGrath

or
_BGWALZR.STY
Memo: A full bluegrass band playing an elegant bluegrass waltz.
_BGWALZR.STY. Bluegrass Waltz w/ Res Guitar
All RealTracks. Quintet. Tempo=140 (120-160)
Instruments: Ac.Bass, Mandolin, Banjo, Res.Guitar, Ac.Guitar
RT1110: Mandolin, Rhythm BluegrassWaltz Ev 140 , Jason Roller
RT1106: Bass, Acoustic, BluegrassWaltz Ev 140 , Byron House
RT1105: Banjo, Rhythm BluegrassWaltz Ev 140 , Glen Duncan
RT1297: Guitar, Resonator, Background BluegrassWaltz Ev 140 , Glen Duncan
RT1109: Guitar, Acoustic, Strumming BluegrassWaltz Ev 140 , Pat McGrath

The suggestions for the song are:

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