Possible Clues:

• *Mock rock band in a 1984 film
• Activity involving a needle
• Band name that has an umlaut over the 'n'
• Pretend group performed in theatre?
• Mock rock band in a 1984 film
• *"Break Like the Wind" band
• Band with an umlaut on the "n" in its name
• Fictional band that uses an umlaut on the "n" in its name
• Titular rock band whose film's IMDb rating goes up to 11 rather than 10
• Band in a 1984 Rob Reiner mockumentary