orDrumbox is a free drum machine software, designed to be as creative as possible with some unusual features : auto-composition, polyrhythms, custom arpeggiation, automatic sounds/track matching, custom soft-synths, lo-fi rendering and more ... Ideal for experimentation and fast results. This software can automatically compose bass line, melodic patterns and complete songs. It comes with rhythms database and sounds database including music items which can be fully edited. And a fully customizable softsynth section add many synthetics sounds as presets to sounds library.