“…While there are clearly many investigations in the literature comparing musicians and nonmusicians, fewer break the dichotomy down into different types of musicianship and when they do, the results are often mixed. For instance, some studies have compared professional to amateur musicians and nonmusicians ( Kauffman and Carlsen, 1989 ; Gaser and Schlaug, 2003 ; Hove et al, 2010 ; Krause et al, 2010 ; Repp, 2010 ; Mikutta et al, 2014 ; Appelgren et al, 2019 ), early- vs. late-trained musicians ( Watanabe et al, 2007 ; Bailey and Penhune, 2010 , 2013 ; Steele et al, 2013 ; Bailey et al, 2014 ; Shenker et al, 2022 ), and active vs. inactive musicians ( Hanna-Pladdy and Gajewski, 2012 ; Bonde et al, 2018 ; Romeiser et al, 2021 ). This last classification of active vs. inactive musicians is especially important for investigating how ingrained these musical abilities truly are—do they dull without regular maintenance or are they set in stone once perfected?…”