About Us

Harmony Systems, Inc., maker of Delora Software, is a micro-company located in Middletown, MD. We develop software applications that serve producers and musicians by enhancing the tools used to create music compositions.

Our Team

Douglas Kraul is an electronics and computer industry innovator who began working and playing in the electronic music field over forty years ago when he built his own analog synthesizers. Founder of Harmony Systems, Inc., Doug handles all product development.

He creates music compositions under the name drK and Ambientronic.

Harmony Systems, Inc.

Harmony Systems, Inc., founded in 1983, has provided innovative products to the personal computer and music and recording industry for over 30 years. Harmony Systems' novel products have been licensed to industry leaders, making Harmony Systems the "silent partner" behind numerous award winning products.

Harmony Systems was one of the first companies to bring to market products using the MIDI standard. Its SynHance™ family of MIDI peripherals brought professional recording features and capabilities into the personal studio. The SynHance MTS-1 pioneered low-cost tape synchronization that made possible spot-on synchronization between analog multitrack tape and digital MIDI sequencing. The SynHance Voice Vault™ family provided both storage expansion and library features to the Yamaha DX and TX series synthesizers through a stand-alone device.

Harmony Systems has also provided designs and technology to the electronic musical instrument industry. Its voltage control oscillator (VCO) design has been licensed to one of the leading modular synthesizer "revival" companies and is widely recognized for its superior performance and stability.

Harmony Systems, through its Delora Software brand, has been developing and offering iPad and iPhone apps for electronic musicians since 2010.


Delora, SynHance, rsTouch, lpTouch, gbTouch, rsRemote, gbXRemote, gbRemote, gbLink, vM2, vKA, vKi, vKiP, KymaConnect, PacaConnect, CapyLink and Litespeed Recordings are trademarks of Harmony Systems, Inc.

Apple, GarageBand, iPad, iPod, iPod touch, Logic and Mac are trademarks of Apple, Inc., registered in the U.S. and other countries.

Kyma, Pacarana, Paca, Capybara and Symbolic Sound are trademarks of the Symbolic Sound Corporation.

Reason and ReWire are trademarks of Reason Studios Software.

The Bluetooth word mark and logos are trademarks owned by Bluetooth SIG, Inc., registered in the U.S. and other countries, and any use of such marks by Apple is under license.

All other trademarks and logos from these or other companies referenced on this website are property of their respective owners.