Brzmienie whistle między sobą nie różnią “aż tak bardzo” ale jednak jest różnica… jest ona między innymi konsekwencją kształtu ostrza gwizdka, planuję taki dla porównania 
Every Alba whistle is made from a high grade aluminium alloy and has a fipple plug made of albanite. The plug comes in a variety of colours but as the colours vary from batch to batch, unfortunately they cannot be specified with your order. All whistles feature a curved windway to reduce moisture problems. All keys are available as tuneable versions with the soprano available as a non-tunable whistle.
Źródło: Alba whistles handcrafted in Scotland
Professor Nicholas Conard of the University in Tuebingen shows a flute during a press conference in Tuebingen, southern Germany, on Wednesday.The thin bird-bone flute carved some 35,000 years ago and unearthed in a German cave is the oldest handcrafted musical instrument yet discovered.