Possible Clues:

• (In music) fast
• To be performed in brisk style
• Old Austin's rather fast
• Is the whole of it mixed with gore but still lively?
• Fast tempo, musically
• That's nothing but a brisk mixture of gore
• Nothing but a mess of gore to make things lively
• Brisk movement inhibited by illiberal legroom
• (In music) briskly
• Briskly (of music)