Did you ever want to play with the CD but it was just too fast? This CD player can change the speed of the music without changing the pitch! What a great practice tool! It can also change the pitch if the CD is slightly different from your harp. Many other features like a built in metronome and tuner are also included. You will need headphones or speakers to use it. Powered with AC adaptor or batteries. Search on line for: Tascam CD-VT2.