The Luna Heartsong Grand Concert Acoustic-Electric Guitar is another great innovation, sparked by asking players what would facilitate their creative process. Luna is using Fishman's plug-and-play system with a USB output and built-in tuner that allows a player to capture their creativity with maximum convenience. The Song is further distinguished by its superb tonal quality, distinctive treble/bass clef sound hole rosette, select spruce top, mahogany body and rosewood fingerboard.