Chirp is a MP3 & Audio software developed by Tanager AudioWorks. After our trial and test, the software is proved to be official, secure and free. Here is the official description for Chirp:

Edit by Marydown: Chirp turns your computer or laptop keyboard into a Virtual MIDI Keyboard controller with 18 piano keys, 10 drum triggers and all the control you'd expect from a piece of hardware. The program produces no actual "sound" itself - instead it produces MIDI notes and messages, which in turn "drive" any music software application, MIDI instrument or plug-in soft synthesizer capable of generating sound from MIDI input. Many music software applications and soft synths include some Virtual Keyboard capability, but very few allow the MIDI notes to be generated using your computer keyboard. Many limit input to a mouse click, which makes chord entry and real-time playing virtually impossible. Chirp accommodates up to 7 notes on the keyboard to be played simultaneously and in real-time, allowing for even complex 9/11/13 chord entry over 2 octaves.

Chirp was designed to be a low latency controller capable of both supply MIDI notes and displaying played notes from any music application with MIDI I/O capabilities. We envisioned the primary computer platform as a Windows or Mac laptop, and most likely in a remote environment where the use of a physical keyboard is impractical, such as an airplane seat, bus seat (or even your desk at work!) Chirp allows the user to choose which computer keys are mapped to the piano keyboard keys, as well as assign the trigger pads to any MIDI event.

Features:

* Virtual MIDI Keyboard Controller Software for Mac or PC
* Play keyboard parts using your laptop keyboard
* Works with any music software