Ninebuzz Software has introduced Guitar Jam Tracks — Scale Trainer & Practice Buddy 1.0 for Mac OS X. It features five musical styles and Retina-ready graphics.
Guitar Jam Tracks provides a way to practice guitar scales. Features include: five professionally recorded styles; chord charts for rhythm guitar parts; pentatonic scale charts in all keys for learning lead guitar; keyboard shortcuts for one-touch toggling of style, key, scale, charts; etc.; automatic track looping; zoomable scale charts; and more.
Guitar Jam Tracks requires OS X 10.7 or later. It costs US$4.99 and is available worldwide exclusively through the Mac App Store in the Music category.