Mary and I are off to Barbados then on to Guyana and Northern Brazil. I am trying to obtain the programme for the Opera House in Manaus for February. Anyone know where I can find it ? Also any tips on what to see in this part of the world ?

Check the Operabase website. They show listings for the Manaus opera house and festival. I don't see a schedule, but there's a contact email address.

[edited to add: The site's not very user friendly, but there is a list of performances. It doesn't show any until April, though.]