Hey Nena has seen 14 bands.

Band Concerts Seen
  New Kids On The Block 9 concerts
  Boyz II Men 3 concerts
  Natasha Bedingfield 2 concerts
  98 Degrees 1 concert
  Backstreet Boys 1 concert
  Debbie Gibson 1 concert
  Descendents 1 concert
  Jordan Knight 1 concert
  Naughty By Nature 1 concert
  Nelly 1 concert
  Paula Abdul 1 concert
  Salt-N-Pepa 1 concert
  Tiffany 1 concert
  TLC 1 concert