This category is for posting copyright-free BGM materials that use keyboard instruments as instruments. The piano, also known as the king of musical instruments, and keyboard instruments such as harpsichord, organ, electone and synthesizer, are characterized by the ability to play melody, harmony and rhythm independently. If you are looking for keyboard instrument music by people who are developing games for smartphones such as iPhone or those who are producing various video works, you can search from this keyboard instrument category.