“…In another study that used unfamiliar but Western-sounding melodies, memory faded over time but was still above chance levels after 1 month (Peretz et al, 1998). Although listeners with limited music training lack explicit knowledge of mode or meter, their implicit knowledge of Western tonal and metrical structures would have facilitated perception (e.g., Hannon & Trehub, 2005;Lynch, Eilers, Oller, & Urbano, 1990;Trehub & Hannon, 2009) and memory (Demorest, Morrison, Beken, & Jungbluth, 2008;Demorest et al, 2010;Wong, Roy, & Margulis, 2009) in the present study. Had the melodies been atonal, nonmetrical, and/or drawn from a foreign musical system (e.g., Balinese, Balkan, Indian), recognition would have been much more difficult, and it is unknown whether changes in surface features would have a detrimental effect similar to the ones that we observed.…”