Be sure to add me to your favorites list 1 Casio Barcode Song Music Sheet for models MT-70, VL-5, and 701 BarCode Memory Keyboards, "Russian Folk Song". This is 1 (one) original Casio keyboard accessory from the early 1980's, used for several keyboards that use the bar code music system that Casio used on several models. I had a bunch of these at one time, but I've found that I only have this 1 card left. The title of this one is "Russian Folk Song". This 1 music card, with bar code data on it, to be read by the MS-1 bar code pen, that is used with several Casio / Casiotone keyboards from the time period. There are 3 models that I know can use this, the MT-70 mid-sized keyboard, the VL-Tone VL-5 mini keyboard, and the Casiotone 701 full sized keyboard. These song cards are read by your bar code reader with your Casio, putting the information into the MT70 / VL5 / 701's internal song sequencer for playback. The song title is: Russian Folk Song This is a document, a sheet of barcode music on it. This is NOT a piece of equipment or instrument. If you have any questions, I'm always happy to answer them! Please check out my Store!