Online Roland Synthesizer
In celebration of 50 years, Roland has collaborated with sound designer Yuri Suzuki to create Roland50 Studio, a digital reworking of some of their most famous and influential devices.
You can play with a trio of Roland music machines for the musically inclined (and the no so inclined): the TR-808 drum machine, the TB-303 bass synthesizer, and the SH-101 synthesizer.
Even better, once you have your masterpiece set, you can download it. I wish I had the time to create something extraordinary.