you trigger the closed Hi-Hat you actually trigger the open Hi-Hat sound that is then enveloped to sound like a short, closed cymbal hit. This approach eliminated the need to store two different Hi-Hat samples on individual EEPROMs. This was a smart and economical move by Roland as digital storage was very expensive at the time, thus allowing them to keep manufacturing costs down. With the introduction of a 707/727 sound set for the Roland TR-8, Roland published an in-depth explanation of what causes a TR-707 unit to behave differently than a set of sampled sounds from the machine. Legacy The TR-707 was a staple in early house music, particularly with acid house. It is also a staple of almost all electronically produced Arabic pop music (al jeel). Because the TR-707 offers a limited number of instruments sampled at 8 bits, its sound is considered dated by modern standards. However, it is still in use because of its versatility in synchronizing with other hardware and its fully featured interface, comparable to that of high-end Roland drum machines such as the TR-808 and TR-909. The TR-727 is visually identical aside from having blue highlights on the case, but it contains a different, Latin-inspired sample set. The TR-505 contains a subset of samples selected from the 707 and 727. Songs that use the 707 include "Need You Tonight" by INXS, ''Move Your Body" by Marshall Jefferson and "Washing Machine" by Mr. Fingers. References External links Roland TR-707 Owner's Manual Synthmuseum: Roland TR-707 Drum machines TR-707 Grooveboxes TR-707 Musical instruments invented in the 1980s Japanese inventions