There are a number of instruments that are often paired with one another because the sounds complement one another in a duet fashion, and if a person has decided to take up a new instrument and learn music with a friend, it can be beneficial to choose two instruments that sound good together. While one person might take beginner guitar lessons, another might do well learning the saxophone. For someone who wants to play the piano, it might be worth that person's friend taking up the flute or another woodwind that would offer a number of possible duet opportunities.