The Roland FR-4x (piano type) and FR-4xb (button type) V-Accordions are powerful and portable. Featuring flagship sound engines derived from the flagship FR-8x, these models provide a wide range of traditional accordion sounds, plus orchestral voices, organs, and onboard drum sounds. The FR-4x and FR-4xb also include many other noted V-Accordion features, including authentic playability with pressure-sensing bellows, sound expansion capability, built-in speakers, and more. In this video, Ludovic