Possible Clues:

• Seems like a couple of years since The Band included those from the 70s
• Urge pa, go around with people of the same generation
• Survey category
• Cut top herb bunch from a similar vintage
• Category on a survey (2 words)
• Demographic division
• Demographic (2 words)
• Prague has go at the same class
• This class quite high for those getting on
• People who are about as old as each other travelling up a gorge