This is a content pack for use with Caustic 2. You must have Caustic 2 installed to use this! The hardware electronic keyboard sampled here is a digital square wave instrument. I don't know exactly how old it is but my guess is that it's at least 20 years old. It has 12 chromatic sounds: 01- Piano 02- Saxophone 03- Pipe Organ 04- Guitar 05- Trumpet 06- Violin.