What can have happened? I have a multitude of unlinked step sequencer clips on my drum track. All of a sudden, every single Db (which was a snare) has been turned into an E (which is a clap) on every clip on the track. I wouldn't even know how to do that if I wanted to. Now I have a hell of a lot of work to do fixing it all. Is there some quick and easy way I can change all E's to Db's? 

Clicking that note in the keyboard of the PRV will select them all. Then just drag them all back up to the E. I would guess that's how they got moved in the first place. It would be pretty unusual for SONAR to perpetrate something like that without help. 

The strange thing is, I had never opened a PRV for that track. It's all done in the step sequencer. 

Ah well, a few strange things have happened tonight. A synth break was suddenly sounding an octave higher, till I noticed the key had been shifted up 12 semitones in the MIDI controls...and I DEFINITELY didn't do that 

You can also use the Event Inspector for editing large data selections even on multiple tracks...

* Cakewalk SONAR - Event Inspector Editing
http://www.digifreq.com/digifreq/video.asp?ID=7

Scott

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Scott R. Garrigus - http://garrigus.com
* Author of the Cakewalk Sonar and Sony Sound Forge Power book series: http://garrigus.com/?PowerBooks
* Author of the Cakewalk Sonar ProAudioTutor video tutorial series: http://garrigus.com/?ProAudioTutor
* Publisher of the DigiFreq free music technology newsletter: http://digifreq.com/?DigiFreq
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I always just hit "back" until the problem is solved.