The Tenori-on is an electronic musical instrument designed and created by the Japanese artist Toshio Iwai and Yu Nishibori of the Music and Human Interface Group at the Yamaha Center for Advanced Sound Technology. It consists of a hand-held screen in which a sixteen-by-sixteen grid of LED switches are held within a magnesium plastic frame. Any of these switches may be activated in a number of different ways to create sounds. Two built-in speakers are located on the top of frame, as well as a dial and buttons that control the type of sound and beats per minute produced.
There are two versions of the device available. The original TNR-W (Tenori-On White) features a magnesium frame, 256 rear panel LEDs and can run on batteries whilst the more affordable TNR-O (Tenori-On Orange) features a white plastic frame, has no rear LEDs and does not take batteries. The modes and sound sets in these instruments are the same.
Both devices have an LCD screen on the bottom edge of the frame. Using the connection function, it is possible to play a synchronized session, or to send and receive songs between two of the devices.
Tenori-on was demonstrated at SIGGRAPH 2005 held in Los Angeles, CA in August, 2005. A detailed discussion of the design of the Tenori-on is given in a paper presented at NIME 2006 conference held at IRCAM, Centre Pompidou in Paris, France in June, 2006.
Toshio Iwai has been using the Tenori-on in live performances (such as at Sónar in Barcelona, in June 2006, and Futuresonic in Manchester, in July 2006, the Futuresonic 2006 live show had some good feedback from the audience and that was one of the most important triggers to make it a real product). The instrument was launched in London on September 4, 2007 for a recommended retail price of $1,200 (£599). To promote this launch, three prominent electronic and experimental musicians -- Jim O'Rourke, Atom Heart, and Robert Lippok—were invited to compose "demo" tracks utilizing the device. These tracks have since been released as promotional MP3s from the Tenori-on website.
Iwai's intention in creating the Tenori-on is to create an electronic instrument of beauty. In his own words:
- "In days gone by, a musical instrument had to have a beauty, of shape as well as of sound, and had to fit the player almost organically. [...] Modern electronic instruments don't have this inevitable relationship between the shape, the sound, and the player. What I have done is to try to bring back these [...] elements and build them in to a true musical instrument for the digital age."
A World Tour introducing Tenori-on began in Frankfurt, Germany, on March 12, and finished in Tokyo on 25 April 2008. Artists on the tour included Jim O'Rourke, Atom Heart, To Rococo Rot, Pole, Robert Lippok, Sutekh, The Books, Krikor, Safety Scissors, I Am Robot and Proud, Lou6Journey and Nathan Michel.
Performers using the instrument 
Björk has used a Tenori-on in her live performance of the song Who Is It on Voltaic tour.
Gotan Project on tour 2010/2011.
Mexican electronic music act Nortec Collective Presents Bostich + Fussible
Jonathan Coulton frequently uses a Tenori-On when performing his song My Monkey.
Film composer, Hans Zimmer, used the Tenori-On during his performance at The Dark Knight premiere.
TNR-i (Tenori-on as a software app) 
As of June 2011, Yamaha made Tenori-on also available as a software app for Apple iOS devices (iPhone, iPad, iPod).
See also 
- Iwai, Toshio. "Tenori-On". Int'l. Conf. on Computer Graphics and Interactive Techniques. http://www.siggraph.org/s2005/main.php?f=conference&p=etech&s=etech29.
- Nishibori, Yu; Iwai, Toshio (2006). "Tenori-on" (PDF). Proceedings. Int'l. Conf. on New Interfaces for Musical Expression (NIME-06). pp. 172–175. http://www.nime.org/proceedings/2006/nime2006_172.pdf.
- "boots got a new toy". YouTube. Retrieved 28 November 2011.
- Video J-J. Birgé with artist Nicolas Clauss
- Video J-J. Birgé with cellist Vincent Segal
- (French) 
- "Mark Barrott, Future Loop Foundation". Yamaha. Retrieved 4 December 2011.
- "TNR-i - TENORI-ON - Yamaha".
- Yamaha Tenori-on Official Global Website
- Yamaha Tenori-on Official USA Website
- Yamaha Tenori-on Official European Website
- The world's first TNR album (Seven Days Microsleep) produced by Norman Fairbanks
- This gadget rocks! The world's newest musical instrument, The Independent
- Source for version 2.0 of the Tenori-On firmware