This is C++ FQA Lite. C++ is a general-purpose programming language, not necessarily suitable for your special purpose. FQA stands for "frequently questioned answers". This FQA is called "lite" because it questions the answers found in C++ FAQ Lite.

The Echo Nest is a music technology company founded by two MIT Media Lab PhDs. The Echo Nest’s proprietary music analyzer API automatically analyzes audio (e.g. aif, wav, mp3, m4a), and generates an XML file that describes the musical and structural content of the music. That representation can help power music visualization, music games, artistic installations, content-based and DJ applications with a much deeper level of music understanding. For developers, the Echo Nest technology facilitates more efficient, relevant and robust audio data extraction.

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