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Song sequencer (Casio AT-3)


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Moh.Ali

 

Did you save your song to the SD Card as a Casio Song Sequencer file with a ".cms" file extension or as a Standard MIDI File (SMF) with a ".mid" file extension.  If you saved it as a Song Sequencer (.cms) file, then we are going to have to do a little more digging to determine the problem, but if you saved it as a SMF (.mid), then that alone is most likely your problem.  The AT-3 Song Sequencer, like those in the CTK/WK-6XXX/7XXX units, is a 17 track sequencer. Tracks 1 through 16 (the "B" tracks) act like those of any standard 16 track sequencer, but Track-17, the "System Track", is a bit special.  It acts like a Type 0 MIDI file, which has all 16 tracks on a single MIDI channel, rather than one track per channel, as in a Type 1 MIDI file.  So Track 17 actually contains another 16 tracks - the "A" tracks.  These provide recording capabilities for the Auto-accompaniment rhythm tones on Tracks A-09 thru A-16 as well as the UPPER-1, UPPER-2 (LAYER), and LOWER (SPLIT) tones on Tracks A-05, A-06, and A-07 respectively, and the "Harmonize" tone on Track A-04.  The appearance is that you have 32 separate tracks at your disposal, and this is true so long as the song data remains in the keyboard's song memory or within a Song Sequencer (.cms) file, but when the song is saved as (converted to) a SMF (.mid), the MIDI specification only allows for a total of 16 channels in any given MIDI system or MIDI file.  So if you have spread song data across 32 different tracks, there is going to be a conflict when you attempt to condense that data into the 16 available tracks in a SMF (.mid) file.  With all of these keyboards, when a Song Sequencer file is saved as (converted to) a SMF (.mid) any "B" tracks whose "Part On/Off" switch in the MIXER is set to ON, will prevent the correspondingly numbered "A" track from being saved into the SMF file.  So, if you recorded a song entirely in the "A" tracks and saved it as a SMF with all the "B" tracks set to ON in the MIXER, then none of your "A" song data would have been saved into the SMF.  See the "Note" at the top of the right hand column on Page 134 of the manual for a discussion of this limitation.  For related information on this discussion, see the following reply that I made to a similar thread here this evening:

 

http://www.casiomusicforums.com/index.php?/topic/9228-casio-wk7600-midi-data-to-garageband-help-needed/?view=getlastpost

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