The Rainsong Acoustic Bass is a single cutaway carbon fiber acoustic bass, available fretless or fretted. These were available from around 1998, probably less than ten were made in total before Rainsong discontinued the model This model was endorsed by John Entwistle and Dean Felber. According to Dean Felber:
"I judge a bass by how it sounds, not how it looks. This Rainsong had the sound.
We lined it up with four other basses for sound check at the (MTV) Unplugged show and this RainSong was the only one that really worked. You could really hear the difference. Everyone was surprised by it because it did LOOK real good. But everybody, I mean everybody, commented on how good it sounded. All the sound guys kept telling me how great it was to work with. You could get the sound out so much faster. It really does have the definition.
I also liked it because it rained that night of the MTV show and it was the only guitar that stayed in tune. Graphite is a good medium to have, because it rains a lot in the Carolinas."