Watch the Sonora Spring: Solo Section online guitar lesson by John Jorgenson from Gypsy Jazz Journeys: Sonora Spring

The third phrase is over a C chord and is basically a C arpeggio with a major 7th thrown in. Start by rocking back in forth between the C and the B on the B string, and then go up the arpeggio to E and G, and then repeat it, ending on the F# at the 14th fret of the high E string for the next chord (B7). We're just using alternating picking here, starting with a downstroke.