A line of modular synthesizer modules, manufactured by a company called Busycircuits in the UK. All modules are in the Eurorack format. Their first module, released in 2013, was the "Pamela's Workout" clock and pattern generator, and was an immediate hit. This allowed the company to launch an eclectic line of modules, including several drum synthesizer modules (both analog and digital types are offered), and two modules which provide interfaces to a SID integrated circuit (which must be supplied by the user). Modules feature unlikely names such as "Akemi's Castle" (a Yamaha-style, four-operator FM module) and "Tangle Quartet" (a quad VCA). Modules containing the word "Taiko" in their names are drum synthesis modules.