Sound changing within a loop: the TB-303 and acid house
The sound of acid house can be traced through a TB-303 collection record and an official account of Phuture’s production.
The UK’s Science Museum Group holds a Roland TB-303 described as a bass synthesizer with a sequencer. Its collection record identifies the model as made in Hamamatsu, Japan, between 1981 and 1984. Roland’s official article also records its discontinuation in 1984, agreeing with the end of the museum’s manufacturing date range.
The same Roland article explains that members of Phuture acquired a second-hand TB-303, established a basic sequence, and then altered the loop’s timbre by adjusting its knobs. This work led to the track later known as “Acid Tracks.” The account documents not only the creation of a repeating sequence, but also the role of changing its sound while the repetition continued.









