Apple has updated Logic Pro X, its pro level music software for Mac OS X, to version 10.2.1. According to Apple, the upgrade contains fixes and enhancements including:

° New multi-threading feature improves performance when processing multiple live channels;

° Faster playback responsiveness when previewing Apple Loops and performing region edits;

° Flex Pitch editing can be performed within the Tracks area using a Piano Roll interface;

° A collection of 30 plug-ins have been redesigned to add Retina support and improve usability;

° Numerous improvements to Alchemy including Apple Loops support and 11 new spectral effects

° Improved reliability when downloading additional content;

° Additional content can be downloaded directly from the Sound Library and Apple Loops browsers;

° Drum Machine Designer supports drag and drop of multiple audio files;

° The Step Editor can automatically create lanes to display all MIDI events in a region;

° New export option allows you to to create stems from multiple selected tracks

° Improved VoiceOver support.

The update for current Logic Pro X users is free and available now through the Mac App Store (http://tinyurl.com/krwv9j6). For new users the software costs $199.99.