Possible Clues:

• Bird of the crow family
• Tchaikovsky's Suite
• And 10 across, it's smashing what a sweet sound you get from this
• Tchaikovsky ballet
• Bird enthusiast takes the biscuit
• Brazil under pressure from this fantastic goal witnessed by fan
• The work of Tchaikovsky, eccentric, wonderful thing
• Brazil may cave in on account of this
• Christmastime staple, with "The"
• Ballet fanatic takes the biscuit