12201
The Ernest Ansermet recording of Igor Stravinsky 's Petrushka was key in the development of full frequency range records and alerting the listening public to high fidelity in 1946 .
 Ernest Ansermet, Igor Stravinsky
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ernest Ansermet, Igor Stravinsky