Decibel launched its first API in 2011. Since the launch, Decibel has enjoyed success in becoming the fastest growing European company in the digital music sector. However, the massive growth falls short of Decibel's ultimate goal. Decibel hopes to enhance the consumer relationship with digital music and uncover the next generation in digital music services. In the end, Decibel aims "to become the industry standard for music metadata."
Peachnote is quite an innovative approach to music analysis. Developed by Vladimir Viro, a renaissance man who bridges the worlds of classical music and advanced mathematics, the Peachnote API provides the ability to search a large collection of public compositions by melody or sequence of chords.