Awesome. I remember they used to sell that computer at K-Mart under the brand/model name "Timex Sinclair". Our family opted for the Texas Instruments Ti-99/4a which was pretty cool (another BASIC language machine) but was already on clearance sale by the time we got it.
My first synthesizer, a Yamaha DX27, had a cassette port and you could save user preset sounds to tape in similar fashion.