The album will be played continuously from 6am until 9pm and will be heard in all 69 metro stations and underground tram stops.
It’s not the first time that a record company has used the Brussels metro’s public address system to promote a new album.
At the end of last year, the American rock group Kings of Leon’s new album “Come around sunshine” was promoted in a similar way.
"Born this way" is Lady Gaga’s third album. It contains a total of fourteen tracks, twelve of which new. Only "Born this way" and "Judas" have already been released as singles.