Jon Johnson 208 Report post Posted April 9, 2017 The Roland Rhythm Arranger TR-66 is an analog drum machine from 1973. It is considered more an a arranger because it has 18 different drum patterns, from rock, swing, march and dance styles. These patterns could then be mixed with the 9 more rhythm patterns. Waltz, Cha-Cha, Bossa Nova, Rumba and more. A new unique feature for it's time was an A/B/Auto variation which increased the rhythm arrangements to make the unit more flexible. View full drum machine Share this post Link to post Share on other sites
