Related Clues:

• Cake __
• Combine into one
• Be sociable, say
• Socialise
• Put audio tracks together
• Baker's verb
• Integrate
• Not be a wallflower
• Dance recording
• Pancake-making facilitator
• Action verb that's also a Roman numeral
• Gorp, e.g
• He and she double up
• Combine, blend
• Make a soundtrack