Gibson Hummingbird Quilt Maple Acoustic/Electric Guitar with quilted Maple back and sides The Gibson Hummingbird has a Sitka Spruce top with Maple back and sides with multi-ply top and back binding and traditional double ring Rosette. This classic acoustic also has traditional scalloped X-bracing. The neck is Mahogany with a round profile and a compound dovetail neck joint with a Rosewood fingerboard and a Mother of Pearl Parallelogram inlays. This classic has the Grover Rotomatics tuning machines in gold and the guitar is equipped with the L.R, Bags Element pickup system.