Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Yamaha Tenori-On Orange
Product description: Media artist Toshio Iwai collaborated with Yamaha to design a totally new musical instrument. Tenori-on combines a MIDI controller, tone generator, sampler and stunning visual user interface. Most importantly its a unique new way to approach playing and composing music. Music instantly becomes a wall of light graffiti as you paint the sounds across its 256 LED buttons. The new lower priced O model is functionally exactly the same as the original W except its 256 orange LEDs are on one side of its unique hands on interface and it does not operate on batteries. The Tenori-O will appeal to producers, music production home studios and anyone who wants to start instantly making music visually.
Product feature: 239 normal AWM2 voices + 14 Drum Kits, 122 x 32 backlit LCD, 10 reverb types and 5 chorus types effects, Three user sampled voices and User Voice Manager software application, SD Memory card slot
Product brand: Yamaha
Target attributes: Key Count
Answer: attribute: key count
value: None
source: None