Extract pitch and duration from ly:music

[Paolo Prete]

Hello,

is it possible to extract pitch and duration, inside a function, from a ly:music (a simple note) parameter?

I would like to obtain something like:

func = #(define-music-function (parser location note dur) (ly:music) 

#{ ....  $mypitch $myduration .....  #}  )

... But I don't understand if is there a way to obtain $mipitch and $myduration

I know that I can extract them with scheme:

((mypitch (ly:music-property note 'pitch '()))

    (myduration (ly:music-property note 'duration '())))

But I see that it is not possible to use $mypitch and $myduration in the #{ ... #}  scope.

Thanks for your help.