Whats the exact tag for root key in the wav file metadata?

[polarity-dnb]

and how to set it? anyone?

[msorrels]

It's not a tag. This might help
http://www.kvraudio.com/forum/viewtopic.php?p=3061898

And in case anyone was interested, my bookmark on Apple Loop's format:
http://blog.apmatthe.ws/post/7306991666 ... pple-loops

[Ogopogo]

I don't think this is accessible in the Bitwig browser. Seems like a good idea for it to be in there though. There are a lot of drum samples that come with root key info that really complicates the hotswaping process because you have to keep going back and deactivating keyboard tracking to hear it right. And it would be good to able create and save samples with pitch info on them in Bitwig.