1. F. Richter, "Americans hesitant to return to normal," 2020. [Online]. Available at:https://www.statista.com/chart/21392/americanss-readyness-to-return-to-normal-activities/. Accessed May 10, 2020.
2. C. Dilenschneider, "Return to normal activities," 2020. [Online]. Available at:https://www.colleendilen.com/wp-content/uploads/2020/04/Return-to-normal-activities-April-20.png. Accessed May 10, 2020.
3. M.S. Roberts, "Classic FM," 2020. [Online]. Available at: https://www.classicfm.com/artists/sir-simon-rattle/worry-desperately-london-orchestra-coronavirus/. Accessed May 10, 2020.
4. A.M. Yglesias, "Recording academy musicares," 2018. [Online]. Available at:https://www.grammy.com/musicares/news/report-musicians-more-likely-struggle-mental-health-substance-abuse. Accessed May 10, 2020.
5. The Performers' Voice;Benninger,2015