Sorry, I did mean dax:trackauthor. I'm modifying from the Crisp template which uses this tag to display only the lyricists of a song on the track page. I like this feature, but it sounds like it's not really available since dax:trackauthor is deprecated.

Is it possible to "call" dax:author, dax:member, dax:guest, and daxroduction with any kind of argument if you only want certain roles? Is it possible to use dax:if and dax:authorrole together to somehow select a particular entry on the basis of what role it has been assigned?

Thanks.