its current home next to the barbican is set to be bulldozed and replaced with an office block. it means some traders at the nearby poultry market will have to relocate to billingsgate market in dagenham. but the city of london corporation says the benefits of the scheme outweigh the disadvantages. the alzheimer s society says interest in singing groups for people living with dementia has risen since a bbc documentary by the actor vicky mcclure. music therapy is known to have positive effects on those with the condition. the singing for the brain choir in croydon holds sessions every week and has grown in popularity with a range of members, some of whom are in their 905. these tunes are lodged somewhere deep in an important part of the brain, which is reserved for memories of pleasure. and this is something they can do, and in very many cases can do better than their carer. and it s something which validates them and gives them a reason and purpose. let s take a look at the tubes now.