- Clarinet and saxophone
- Flute and recorder
- Trumpet and trombone
- Violin and viola
- Cello and double bass
Each of these instruments has a unique sound, but they can all produce similar tones and melodies. This is due to the fact that they are all played in the same way and have similar construction. For example, the clarinet and saxophone are both played by blowing air into a mouthpiece, and they both have a single reed. This gives them a similar sound.