Top: Solid Spruce Side/Back: Walnut, Neck: Mahogany, F/b: Purplewood, Bag included, Trans ac. EQ - The Flight Sophia Soundwave Concert is the belle of our modern designs! It combines the incredible Flight Sophia Concert Ukulele with the Flight Soundwave Pickup System. The Flight Sophia Concert, a member of the Flight Princess Series, features a solid spruce top with laminate walnut back and sides. The amazing Flight Soundwave Pickup System adds acoustic or amplified effects, with or without plugging in. Complete control of the effects is located on the ukulele itself! Finally, every Flight Sophia Ukulele comes with a bone nut and saddle, premium Worth Brown fluorocarbon strings, and the Flight Deluxe Gig Bag.