Joe is referring to the three week session in NYC.  Most of the ideas for the songs on Sandinista
were born during that time.  However, the band did spend a considerable amount of time recording in London 
to complete the album, and some songs were actually written and recorded then.

They also recorded at least one track in Jamaica, and managed to squeeze in the sessions for Ellen Foley's
album during July of 1980, before completing Sandinista in October.

Jeff Sanchez