Addictive Keys Modern UprightA Modern Classic Yamaha U3 Upright Piano Distinct, blendable characteristics 7 Different recording perspectives Sometimes a grand piano is just too, well grand. Maybe you need something smaller and more intimate. In those cases, the Modern Upright is the perfect choice. The Modern Upright is based on a Yamaha U3 upright piano regarded by many pianists as a modern classic. It has a tight and defined tone with an airy ambience that makes it fit nicely