These elements have resulted in both "full" and alternate fingerings differing extensively between bassoonists, and are further informed by factors such as cultural difference in what sound is sought, how reeds are made, and regional variation in tuning frequencies (necessitating sharper or flatter fingerings). Regional enclaves of bassoonists tend to have some uniformity in technique, but on a global scale, technique differs such that two given bassoonists may share no fingerings for certain notes. Owing to these factors, ubiquitous bassoon technique can only be partially notated.