Imagine Dragons had a surprise song that played during the opening scenes in Transformers 4 as well as in the end credit roll. It will be released along with others on the TF4 soundtrack which has yet to be given a release date.
UPDATE: It seems like the album is not happening after all. In the meantime, here is the full song ripped from the Blu-Ray.
Here is the list of songs that appeared in TF4 or are just rumored to be on the soundtrack.
1- Heartbreaker - Silva
2- Nasty Girl - TJ Miller
3- Dat Slap - Rodnae Da Boss Feat. Fiend AKA International Jones
4- First Light - Racing Glaciers
5- Moonlight Reflected on the Er-Quan Spring - Lei Qiang
6- U Can't Touch This - MC Hammer
7- Daybreak - Han Geng
8- All For You - Imagine Dragons
9- Battle Cry - Imagine Dragons
10??- Who Control - Han Geng