Possible Clues:

• One may appear heated, but that's just nonsense
• Bombast, or balloon filler
• Kind of balloon that holds people (2 words)
• Empty or boastful talk - good for balloons
• It's nonsense to talk of getting the ballon up with this
• Musical books contained bunkum
• Empty boastful talk; balloon lift provider
• Empty bombast often found in balloon
• Lift for the Montgolfiers
• Empty promises