Definition of purvey. purveyed. ; purveying. transitive verb. 1 : to supply (as provisions) usually as a matter of business. 2 : peddle 2.
Using a capo is easy. You just have to think of it as a movable nut. Clamp it on the fret you will use for the key you are playing in, and just play chords or picking from a key you know. You can play in G using chords from the key of F if you put the capo on the second fret.
In this video I'm using a plastic Bugs Gear ukulele, but you can do this with a normal wooden ukulele too. In an upcoming video I'll make the gizmo mod on my Makala Dolphin. By the way all the background music from the video is made with the modified 8-string gizmo Bugs Gear soprano uke from the video.