Introduction While musical engagement has been widely researched and shown to provide significant benefits for people with dementia, barriers exist to its effective implementation in long-term aged care settings. Our previous research has shown that a significant barrier is the lack of staff knowledge and engagement with music-based interventions, limiting both program uptake and overall effectiveness. This research aimed to evaluate a training and support package for care staff in aged care facilities, to help them provide targeted, personalised music listening for people living with dementia. Method Evidence-based guidelines and an online training program were co-designed with aged care staff and people living with dementia. A mixed-methods trial was conducted with 32 dyads (caregiver - resident pairs) across aged care facilities. Results The findings demonstrate improvements in mood and behaviour for people living with dementia, including reduced agitation and enhanced engagement and communication. Caregivers reported challenges of workload and access to technology when implementing the program in residential aged care. However, these barriers were outweighed by the skills development gained from the program training. Discussion The program enabled caregivers to transition from using music as a pleasant diversion to incorporating personalised music playlists as purposeful elements of care plans, demonstrating the value of targeted training and support for aged care staff.