One of the greatest masterpieces of any kind of music, period! Elis Regina was the kind of singer masters like Ella Fitzgerald applauded, and of course there's very little I can add about Tom to what has been written here already. He is my favorite composer of music and song, in effect the Gershwin and Berlin of Brazil. I almost prefer saying that George and Irving are the Toms of the US.
Even if this is a Tom Jobim thread, check out Vinicius de Moraes and the many other masters of Brazilian music. You'll be glad you did.