Multiple value streams chosen by a shared Prand

Hi!

How would I do something like this?

Pbind(
\instrument, \sine
, [\pch, \dur], Prand([
    //pch and dur sequence 1
   [Pseq([60,61], 1), Pseq([1,2], 1)]
,
    //pch and dur sequence 2
    [Pseq([48,49,50], 1), Pseq([1,2,3], 1)]
], inf)
)

Thanks!
-j