TOKYO, August 5, 2014 — Casio Computer Co., Ltd., announced today that it has released a new version of Chordana Viewer, an iOS app that displays the chord progressions of songs to help users create chord charts. This new version is available at the Apple App Store today. Users who have already purchased the original version of Chordana Viewer can download the new version free of charge.

Released in October 2013, Chordana Viewer automatically detects chord progressions and creates chord charts for songs that can be listened to via music apps on the iPhone, iPod touch, and iPad. The app has since become popular because it allows users to virtually play along with their favorite tunes, using instruments such as guitar, piano, or electronic keyboard.

In Chordana Viewer Version 2.0, available today, Casio has added all-new functions. Now the app not only produces chord charts, but also allows users to print and exchange edited chord charts via email, creating more possibilities for playing music together with friends. The new version also lets users adjust the barline position in the musical measure when detection should take place, so that the app can accommodate more diverse music.

• Creates chord charts for the user’s favorite songs
The new version of Chordana Viewer can automatically detect*1 musical chord progressions in audio files and then display them on the screen as a chord chart. Moreover, if the user wishes to change the musical key, the chords change accordingly. In addition to automatic detection of chords, the user can also set the barline position in the musical measure when detection should take place, so that the app can accommodate more diverse music.

*1 The app automatically selects chords that most closely match the compositional character of a piece of music. The selected chords, however, may not exactly match the original chords, depending on the piece of music.



• Allows chord charts to be edited and shared with friends
The chord charts automatically created by the app can be edited to suit the preferences of users. The chord charts can also be printed via Apple’s AirPrint feature, and shared with other people who use Chordana Viewer Version 2.0 via email.


• Adds to the fun of really playing musical instruments
While displaying chord progressions, Chordana Viewer Version 2.0 shows the piano or guitar fingering for the chord on the screen. By playing along on one of these musical instruments, users can feel as if they are performing together with their favorite musicians.


• Enables connection to MIDI-compatible musical instruments
Chordana Viewer Version 2.0 can connect to any MIDI-compatible electronic musical instrument.*2 If the app is connected to one of the key lighting keyboards from Casio, the app guides the user by lighting the keys to play according to the chords and root tone.

*2 Commercially available MIDI interface or adapter is necessary. Please see the Main Specifications for details.



• Accompaniment provided by virtual instruments
Users can choose from four virtual instrument sounds*3 shown on the screen to accompany music, and even record a performance during the accompaniment. The balance between vocals and accompaniment can be adjusted during playback—a useful function for learning to play by ear.

*3 Musical instrument sounds can be added for a fee. Please check prices at the App Store.