My uncle had a bluegrass band.

With the addition of banjo and later fiddle, it seemed like we were a bluegrass band as far as instrumentation goes, but we were just playing songs.

She worked as an acupuncturist's assistant by day and performed in a bluegrass band at night.

That night, they came to an agreement and formed a bluegrass band.

All together, the members of the family formed a bluegrass band.