[Robenco15]

I am not sure which one it was, but marcel mule recorded the picolo trumpet part on a sopranino with pablo casals.

I believe it is long out of print but it was isseud on one of the old columbia prades festival 6 eyes.

I have that recording. So far I only have the first movement. But I'll be getting the 2nd and 3rd eventually. It's pretty cool. According to a website I found it says it was on soprano, but I'm not positive about it. I'll take your word over a website. It probably isn't in the right key, right?