Factual error: Gabriela, the Spanish bride, cannot speak Henry's language, as shown at their wedding. This would be unrealistic in such a time period. Noble young women were taught to converse in more than one language. They socialized and entertained noble guests from other places. While she may not have learned Henry's language as a child, she would definitely begin lessons after their parents agreed on the engagement.
Other mistake: When Queen Marie tells Henry he was born to privilege and it comes with specific obligations, Henry says, "But marriage to a complete stranger never made anyone in this room very happy." Then, King Francis demands, "You will marry Gabriella by the next full moon." The problem is Princess Gabriella of Spain is named Princess Gertrude in the credits. (00:34:05 - 01:57:15)
Answer: There are two songs featured in the trailer: "Fable" by Robert Miles and "Mummer's Dance" by Loreena McKennitt.
Steph_Jared