By September, Wings kicked off what would be their year-long Wings Over the World tour in the UK, with Australia, the US and Canada penciled in for the coming months; Venus and Mars material would be heavily featured.
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.
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