Apple subsidiary Beats on Friday uploaded a short 30-second spot to its Twitter account featuring two of its animated “Pill” creatures and the Siri virtual assistant, marking the first collaborative ad effort since Apple bought the audio company in May. It is unknown if the clip will be aired on television, or if it is meant to stay Web-exclusive, but the ad is the first overtly collaborative video spot to see release since Apple first announced its $3 billion Beats acquisition.