iZotope Iris 2
Generate and modify audio sequences from standard music samples. Select the required elements for your project from the database of Bass, Keys, Leads, Pads, and Rhythmic patches. Combine them according to your design, and play the content to check the results.
iZotope Iris 2 2.0.2 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Audio & Video Tools, more precisely Music Production. This software for Mac OS X is a product of iZotope. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Iris 2 is an app that allows you to create and discover musical sounds that have never been heard before. Get started fast by selecting from hundreds of expertly crafted Bass, Keys, Leads, Pads, and Rhythmic patches. Then customize or build your own patches with an 11 GB factory library of intriguing audio samples, a modern modulation system, classic filters, evocative effects, and more.
You may want to check out more software for Mac, such as iZotope Iris, iZotope Radius for Logic or iZotope Product Portal, which might be similar to iZotope Iris 2.