Building a style library

Styles are MIDI loops included on digital keyboards from Yamaha and other manufacturers from which you can build automatic accompaniments. The feature, which makes a good approximation to a backup band, can turn a simple tune into an interesting performance piece. Yamaha-format styles form the core of our program, the Accompaniment Machine. A typical keyboard […]

PureStyle file format reference

Styles are the versatile automatic accompaniments found on digital keyboards from Yamaha and other manufacturers. There are thousands of Yamaha-format style files available for purchase or download on the Internet. Styles are employed to create custom accompaniments — a virtual backup band for performances. Styles may be installed on keyboards or used in computer programs […]

Style Customizer: bulk style corrections

Styles are the automatic accompaniments available on digital keyboard from Yamaha and other manufacturers. They function like a backup band to spice up performances. The Yamaha-style format has become the de facto standard for style exchange. There are more than a hundred-thousand style files available for download or purchase in all musical genres. Unfortunately, the […]

AMac Christmas Collection

To celebrate the holidays, we expanded our library of ready-to-run Accompaniment Machine (AMac) sequences for Christmas songs. To review, a sequence is an accompaniment that runs in the AutoSequence mode of AMac. It includes a Yamaha-format style (including introductions, section changes, fills and endings), a chord sequence appropriate for the song, and voice settings if […]

Using Coolsoft VirtualMIDISynth with AMac

The usual Accompaniment Machine setup for real-time performances is to use a digital keyboard as both the input and output MIDI port. As an alternative, a user could employ a simple keyboard for input while output waveforms could be generated by the computer using a software MIDI driver and the computer sound system. To minimize […]

How to make your computer sound like a typewriter, redux

In a blog last year (How to make your computer sound like a typewriter), I described how to add typewriter sounds to a computer keyboard using Jingle Keyboard freeware. I recorded a sound set from an IBM Selectric and made it available to use with the program. The article, which also touched on why you […]

KBD-Infinity releases the Accompaniment Machine 2.0, companion for the Yamaha PSR E433

(Press release, Albuquerque, New Mexico 87192 U.S.A., February 1, 2014)

The Accompaniment Machine 2.0 (AMac) is a low-cost Windows program that provides rich enhancements to the popular Yamaha PSR E433 digital keyboard. The Yamaha instrument provides exceptional value, combining a keyboard with a high-quality synthesizer at a cost of only about $250. The compact, portable […]

Digital keyboard assistant completed

The Accompaniment Machine (AMac) has been extensively tested and revised since its release in October. All goals for the program have been met, and it is now in its final form. As with any software, the term final form is flexible. I anticipate minor bug fixes and refinements — hence, a program purchase includes free […]

What is this thing called aftertouch?

Over the holidays I prepared a lecture and report, MIDI Programing with Xojo. The task gave me an opportunity to think about a broader issue: why is it so difficult to teach yourself new subjects rather than to take a class (meaning a real class in a classroom)? Of course, the elephant in the room […]

Where to get keyboard style files

Style files in the format defined by Yamaha are central to the Accompaniment Machine (AMac). Therefore, it’s useful to discuss where to get style files and whether there are any issues of compatibility. The first stop (always at the top of the search page) is the official Yamaha store at I’ve passed by there […]