 In 2015 , American singer / songwriter Lady Gaga performed the song at the 2015 European Games opening ceremony . The song was played for 70 @,@ 000 people in Baku , Azerbaijan that served as host of the event . 
 In 2015 , American singer / songwriter Lady Gaga performed the song at the 2015 European Games opening ceremony . The song was played for 70 @,@ 000 people in Baku , Azerbaijan <a href='null_relcl' title='1'><mark>that</mark></a>served as host of the event . 
In 2015 , American singer / songwriter Lady Gaga performed da song at the 2015 European Games opening ceremony . The song was played for 70 @,@ 000 dudes in Baku , Azerbaijan served as host of the event .