Euphoria, an emotional and mental state defined as a sense of great elation and well-being
Morris Zapp makes a cameo appearance in the last part of Nice Work, to add a plot twist where he tries to arrange for Robyn to have a job interview at his American university, Euphoric State (a fictionalized UC Berkeley), in order to stop his ex-wife from being a candidate for an open faculty position.
Opium and its derivatives can result in euphoric dream-like states and microsleep, known colloquially as "nodding".
This was followed in July with "Let 'Em In", which also scaled the singles charts. Amid all this, Wings finally went to North America for the Wings Over America Tour, playing McCartney's first shows there for ten years (after The Beatles' last tour in 1966) to euphoric reaction; a few selections from Speed of Sound were included.