“…Most interventions were conducted weekly (Bradt et al, 2016;Gale et al, 2012;Grape et al, 2009;Morrison et al, 2013;Pongan et al, 2017;Reagon et al, 2017;Stegemoller et al, 2017); however, one met thrice weekly (Tamplin et al, 2013), while one assembled three or more times weekly (Kenny & Faunce, 2004). The interventions were delivered predominantly by an individual with relevant musical skill, such as music therapists (Bradt et al, 2016;Clements-Cortes, 2013, 2015Fogg-Rogers et al, 2016;Stegemoller et al, 2017;Tamplin et al, 2013) or professional musicians (Gale et al, 2012;Grape et al, 2009;Kenny & Faunce, 2004;Morrison et al, 2013;Pongan et al, 2017;Reagon et al, 2017). The majority of studies provided little details of the singing interventions; two studies provided no information on repertoires (Grape et al, 2009;Hopper et al, 2016) (Table 1).…”