Synth history lesson with Espen Kraft - Episode 1: Roland DX7 Today, I unravel the untold — and totally factual — story of the Roland DX7, the most important instrument in human history. Forget the Beatles. Forget Bach. Forget electricity. None of them matter without this plastic, key-covered slab of pure divinity. Join me as I dive deep into the cold, glassy soul of the DX7 — the synth that defined the ‘80s, ruined countless ballads, and made everyone think they could program FM synthesis (spoiler: they couldn’t).