Joaquín Rodrigo: Concierto de Aranjuez, 2nd movement (10:01):

The piece has constant changeovers between orchestra and acoustic guitar, but the peak is the lead-up to and the abrupt changeover at 07:50. (Despite ample choice, hard to find a good interpretation on YouTube, BTW)

_{*Lunatic*, n.
One whose delusions are out of fashion.}