That is not uncommon in the history of music technology. For example, the Roland TB-303 "was originally marketed to guitarists for bass accompaniment while pra

That is not uncommon in the history of music technology. For example, the Roland TB-303 "was originally marketed to guitarists for bass accompaniment while practicing alone" [Wikipedia]. But what we got from it — in the end — was acid house. The vocoder was originally developed with telecommunications applications in mind, not Kraftwerk.