I have an incredibly strange case.
I've been assembling a collection of demos from old songs I wrote some years ago. I found one, a 2822 kbps WAV file, played it (in Windows Media Player) and thought hmmm...I could have sworn this song had some vocals. Weird.
But I thought never mind, it'll do as an instrumental. It just needs a little remastering.
So I opened up Ableton, dropped it into an Audio track, and hit play.
BOOM, suddenly, there are vocals. Why is Ableton playing them, and Windows Media Player isn't?
So I thought never mind, they're back now. I tweaked some EQ and put a Limiter on it until it sounded decent. Export to 44100 WAV file.
When I play the newly mixed down track in Windows Media, vocals are gone again. I even uploaded it to Bandcamp and played it on there - still no vocals.
What makes it even weirder is that when I drop this newly mixed WAV file back into Ableton, the vocals are gone altogether.
Does anyone know what on earth happened?