<Tr> <Th_colspan="2"> Music video </Th> </Tr> <Tr> <Td_colspan="2"> "Leave a Light On" on YouTube </Td> </Tr> <P> "Leave a Light On" is a song by English singer - songwriter Tom Walker . It was released to digital retailers on 13 October 2017 . The song was co-written by Walker and Steve Mac . The song reached number 1 in France, and reached the top 10 in Austria, Belgium's Wallonia chart, Germany, Italy and Switzerland, while reaching the top 40 on Belgium's Flanders chart, Poland and the Netherlands . The song reached number 35 in his native UK and number 62 on the Irish Singles Chart . </P> <Table> <Tr> <Th> Chart (2017--18) </Th> <Th> Peak position </Th> </Tr> <Tr> <Th> Austria (Ö3 Austria Top 40) </Th> <Td> </Td> </Tr> <Tr> <Th> Belgium (Ultratop 50 Flanders) </Th> <Td> </Td> </Tr> <Tr> <Th> Belgium (Ultratop 50 Wallonia) </Th> <Td> </Td> </Tr> <Tr> <Th> Czech Republic (Rádio Top 100) </Th> <Td> </Td> </Tr> <Tr> <Th> France (SNEP) </Th> <Td> </Td> </Tr> <Tr> <Th> Germany (Official German Charts) </Th> <Td> 8 </Td> </Tr> <Tr> <Th> Hungary (Rádiós Top 40) </Th> <Td> 12 </Td> </Tr> <Tr> <Th> Hungary (Single Top 40) </Th> <Td> 8 </Td> </Tr> <Tr> <Th> Ireland (IRMA) </Th> <Td> 62 </Td> </Tr> <Tr> <Th> Italy (FIMI) </Th> <Td> 8 </Td> </Tr> <Tr> <Th> Netherlands (Dutch Top 40) </Th> <Td> 13 </Td> </Tr> <Tr> <Th> Netherlands (Single Top 100) </Th> <Td> 19 </Td> </Tr> <Tr> <Th> Poland (Polish Airplay Top 100) </Th> <Td> 37 </Td> </Tr> <Tr> <Th> Scotland (Official Charts Company) </Th> <Td> 11 </Td> </Tr> <Tr> <Th> Sweden Heatseeker (Sverigetopplistan) </Th> <Td> </Td> </Tr> <Tr> <Th> Switzerland (Schweizer Hitparade) </Th> <Td> </Td> </Tr> <Tr> <Th> UK Singles (Official Charts Company) </Th> <Td> 35 </Td> </Tr> <Tr> <Th> US Adult Top 40 (Billboard) </Th> <Td> 20 </Td> </Tr> </Table>

Who sings you can leave the light on