Katy B performs Lights On in Derry-Londonderry for Radio 1's Big Weekend.
For more exclusive videos and photos from BBC Radio 1's Big Weekend Derry-Londonderry 2013, check out [ Ссылка ]
![](https://i.ytimg.com/vi/YeTzM_qSoRs/mqdefault.jpg)
Katy B performs Lights On in Derry-Londonderry for Radio 1's Big Weekend.
For more exclusive videos and photos from BBC Radio 1's Big Weekend Derry-Londonderry 2013, check out [ Ссылка ]