Scrabble?! NOTATOR

Definitions of NOTATOR in various dictionaries:

Logic Pro is a digital audio workstation (DAW) and MIDI sequencer software application for the macOS platform. It was originally created in the early 1990s as Notator Logic, or Logic, by German software developer C-Lab, later Emagic. It became an Apple product, eventually known as Logic Pro, after Apple bought Emagic in 2002. It is the 2nd most popular DAW according to a survey conducted in 2015.A consumer-level version based on the same interface and audio engine but with reduced features, called Logic Express, was also available at a reduced cost. Apple's GarageBand, another application using Logics audio engine, is bundled in iLife, a suite of software which comes included on any new Macintosh computer. On December 8, 2011, the boxed version of Logic Pro was discontinued, along with Logic Express, and Logic Pro is now only available through the Mac App Store.