What indie song has ey in it you believe was on a t the park advert?

The indie song that has "ey" in it and was featured in a T in the Park advert is "Hey Now" by London Grammar. The song was released in 2013 and gained popularity after being used in the advertisement for the Scottish music festival T in the Park that same year. "Hey Now" is known for its atmospheric and emotional indie-electronic sound, featuring haunting vocals and ethereal synths.