Apple has released Mac OS X 10.5.4 which is available via Software Update or as a standalone installer from Apple's Software Download site.

As usual this update is recommended for all Leopard user, and includes general operating system improvements that enhance the stability, compatibility, and security of your Mac.

Created by Omer Yosha, the AirPiano is an innovative musical interface which allows playing and controlling software instruments simply by moving hands in the air.

Above the AirPiano is a virtual matrix of keys and faders, each assigned with MIDI messages and ready to be triggered. The length of a triggered note is equivalent to the time a hand is placed on the corresponding virtual key. This is also confirmed by LED feedback. The AirPiano Software allows easy setup, loading/saving presets and transposing notes.

The AirPiano is still in its prototype phase and its concept of a virtual matrix might eventually be used for other applications and purposes. The AirPiano concept is filled as a Provisional U.S. Patent Application (Number: 60/989,986).

Specifications: Polyphonic, MIDI protocol, Up to 24 keys / 8 faders, USB connectivity

Note that video examples are available by following the link below :

TC-Helicon has announced a new version of the Harmony4 plug-in for Pro Tools|HD and TC's PowerCore platform. This new updated version is now Universal Binary compatible and adds an array of doubling presets, including doubling presets that emulate overdub sounds as well as octave doubling.

With TC-Helicon's Harmony4 plug-in, producers, engineers and songwriters can fatten existing harmony tracks and add new 1- to 4-part harmonies after the singer has left the studio.

The update to Harmony4 is available as a free upgrade for existing users. Harmony4 is available for PowerCore at €599, and for Pro Tools|HD at €799.

Muse Research and IK Multimedia have teamed up to release the Total Workstation Rack, powered by SampleTank and Receptor.

The Total Workstation Rack is a combination of Muse Research's unique Receptor hardware plug-in player with IK's Total Workstation line of "Powered By SampleTank" instruments: SampleTank 2.5, Sonik Synth 2, Miroslav Philharmonik, SampleMoog and SampleTron. These IK products come pre-installed and authorized within Receptor; allowing immediate access to make music live and in the studio.

The Total Workstation Rack is priced at $1,999.99/€1,599.99 (exc. taxes). For a limited time, IK registered users can get the Total Workstation Rack crossgrade version for a special reduced price of $1,699.99/€1,399.99 (exc. taxes).

Digidesign has just announced the avaibility of Transfuser, a new RTAS virtual instrument plug-in from the A.I.R. group.

Transfuser is a real-time loop, phrase, and groove creation virtual instrument designed for quickly and easily creating, manipulating, and performing loop- and rhythm-based music on the fly within Pro Tools. It also offers users a quick and easy way to modify existing loop libraries to breathe new life into their creations.

Transfuser is available now in RTAS format for both Mac OS X and Windows at a price of $295 / €282.