@inproceedings{freed1997databaseofchallengin,
  author = {Freed, Adrian and Jehan, Tristan},
  title = {{Database of Challenging Musical Sounds for Evaluation and Refinement of Pitch Estimators}},
  booktitle = {ICMC},
  year = {1997},
  publisher = {ICMA},
  address = {Thessaloniki, Hellas},
  pages = {[not published]},
}