Using open strings combined with fretted notes is a “guitar move” often associated with Telecasters and country guitar. It’s also a staple of classical guitar. “Leyenda” comes to mind with that statement. This isn’t about playing open strings while in open or first position but while fretting notes in higher positions.

These are meant to be played fingerstyle or using pick and fingers. I imagine you could use a cross picking technique if you just use a flat pick. Tough though! There are 4 phrases worked out here. They can be used over any C major chord (maj7, maj9, 6th, etc.) or G dominant chord (G7,9,11,13) that resolve to C. The suggested left and right hand fingering is also indicated.

Below is link to the notation/tab PDF. Check out the video below for further explanation and to give it a listen, if you like.