Well, one day, Daddy made a glug-glug sound that delighted her, and he was inspired to build an entirely new milk jug that would make that special sound whenever it was turned over.

Released in 2000, Roland ’s XV-5080 was billed as the company’s “ultimate sound module,” and with good reason. Building on the success of the earlier JV-1080, this rack-based multitimbral beauty ...