Possible Clues:

• Very little energy in second part of symphony
• Mechanism of second hands included in check
• Doctor emphatic that he's abandoned campaign group?
• Something other than static often heard on Classic FM
• Bustle to arouse chaps, given time
• Flash and passionate, the man's lacking drive
• Part of a musical work
• '70 album "The Isaac Hayes ___"
• Group with a common ideology aiming to achieve certain goals
• It's heard in the National Concert Hall lobby