When listening to a harmonized lead it's usually quite easy to hear the top note of the two parts, as it usually forms the melodic part of the harmony. This would be the part you’d be whistling in the shower. So let's think about the upper part of the harmony.

I played it beginning with the E note at the ninth fret of the third string with the second finger, using a two fret stretch between the first and second fingers then landing the third finger at the tenth fret of the fourth string for the C, then jumping the third finger over to the A note at the tenth fret of the second string. This forms the basic figure for the first of the three sections of the solo, with the A note being bent the second time through.

The second section is a simple three note run on the second and third strings, played CC GAC GAC GAC. Then it transposes to Eb Eb C Eb, before going to the third section which revolves around three notes (F,Eb, C) being repeated and stretched. It finishes with stretching the Bb note at the 18th fret of the first string, then the B natural at the 19th fret of the first string.