Pietro Deiro was an Italian-American musician who popularized the accordion in the early 20th century. The spelling of his name, Pietro Deiro, can be explained through the use of IPA phonetic transcription. "Pietro" is pronounced as "piˈɛtroʊ" with the stress on the first syllable, while "Deiro" is pronounced as "dɛˈroʊ" with the stress on the second syllable. The combination of these two words creates the distinctive name, "piˈɛtroʊ dɛˈroʊ". Pietro Deiro's legacy continues to inspire accordionists and musicians around the world.