Watch Liam Gallagher Perform Oasis' "Live Forever" With Coldplay In Manchester

Hometown hero Liam Gallagher made a surprise appearance at Ariana Grande's One Love Manchester benefit concert today to raise money for victims of the recent terrorist attack. After Coldplay sang Oasis' "Don't Look Back In Anger" to Ariana Grande, Oasis singer Liam Gallagher himself came out to play Oasis' "Live Forever" with Coldplay as his…