Mr Loh Soh Chye, 77, playing the drum and cymbals with six-year-olds Emily Yuliani Fichera (far left) and Ezra Gabriel Dela Cruz. Mr Loh was one of 38 residents from Apex Harmony Lodge who participated in an intergenerational exchange with 59 children from Holy Trinity Kindergarten and 15 students from Siglap Secondary School to mark World Alzheimer's Day on Friday.