An old classic, Bésame Mucho, arranged in a Brazilian bolero style. This is a relatively easy song for improvisers because the song remains in the same key center throughout. There is no crazy bridge that goes off into some distant key.
The song form is ABA with the A sections having 16 bars each. The bridge is 8 bars, giving a total of
16 + 8 + 16 = 40 bars.