MasterWriter, Inc. today unveiled MasterWriter 1.0, an application designed to aid professional songwriters in their craft. MasterWriter offers reference dictionaries, an advanced database for organizing work in progress, word processing functionality, a hard-disc recorder for melodies, a MIDI drum loop library, and Songuard, an online date-of-creation song registration service. MasterWriter works with Mac OS 9.2.2 and higher and Mac OS X 10.1.3 and higher (Jaguar recommended). MasterWriter 1.0 will be available next week for a suggested retail price of US$289.