This overdub session was held to record an instrumental
break for 'Santa Lucia', and to extend it
make it longer.
Another version was created of 'Santa Lucia' using the original 1963 master (2015-04) where the first two verses were both repeated before the third verse. This was issued the matrix number SPA3 7091, also in 1965.
An interesting theory is that 'Wild In The Country' with maracas may have been overdubbed at the same overdub session as 'Santa Lucia', and that one of the overdubbed or extended versions of 'Santa Lucia' may have been intended for the European issue of Elvis For Everyone too, or the Italian market.
Thanks to Kevan Budd for the theory about the overdubbed 'Wild In The Country' and 'Santa Lucia' being from the same session.
Thanks to Cayetano Chaves Prian for YouTube link.