EBR3-N5F Acoustic-Electric Bass Guitar, 5-string Fretless – Boulder Creek Guitars
Altamira N200+ model fretless classical guitar — Official resellers of Altamira fretless classical guitars
Fretless guitar - Wikipedia
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Amazon.com: TARIO 39 Inch Fretless Classical Guitar Full Size Acoustic Guitar Spruce top Ovangkol back and sides Okoume neck laurel fingerboard : Musical Instruments