Tracktion was originally developed by UK designer/programmer Julian Storer, but was then taken on by Mackie. Development seemed to have stalled in the late noughties, but in 2013, it was announced that the software was back in the hands of its original owners.
Since then, it's become a viable music making proposition once again, with version 5 and even Melodyne integration arriving in 2014. If you're looking for a traditional-style sequencing application that ships with a massive bundle of content then Tracktion probably won't appeal, but if other DAWs are leaving you scratching your head, this one might just make sense.4 Stars
FULL REVIEW:Tracktion Software Corporation Tracktion 5