The Eastman MD815-V F-Style F-Hole Mandolin is one of the most recognisable mandolin designs, based on the groundbreaking work of Orville Gibson in the late part of the 19th century, blending traditional mandolin and violin construction principles.  The F-Style mandolin has become one of the benchmark instruments for country, bluegrass, celtic, and traditional music forms.  And, if you take a listen to Chris Thile, they can do Bach to the full potential of the player.  Closely related to the Eastman MD814-V model, the F soundhole and its enhanced treble attack tilts the Eastman MD815-V towards Bluegrass and Country repertoires, compared to the F-holes on the MD815/V.