Avid has acquired Sibelius Software in a deal valued at $23 million in cash. The deal puts on of the leading developers of music notation software into Avid's expanding portfolio of products aimed at musicians and other audio pros.

Sibelius will continue to operate as a business unit of Digidesign, Avid's audio division. The company will continue to develop and market its own line of software used for writing, playing and publishing music notation. What's more, Avid indicated in a statement that it will produce "exclusive and targeted" products that combine Sibelius software, Digidesign Pro Tools and M-Audio keyboards, mics and other audio peripherals.