Bedell Discovery BDD-18-M Dreadnought Acoustic Guitar - Matte/Natural The Bedell Discovery BDD-18-M Dreadnought Acoustic Guitar is perfect for those on a budget seeking a performance quality dreadnought guitar. It's ready to go wherever your music takes you. The BDD-18 has a solid sitka spruce top. This is the most popular wood for guitar tops today. Sitka spruce produces an even, clear response from low to high tones. Known to improve with age, a sitka-top guitar should make a great companion for your musical journey. Bedell uses laminated mahogany for the back and sides. This works well for a dreadnought guitar with a sitka top to generate a strong bass with thick mid and treble tones.