Lady Gaga has admitted she would have quit the music business earlier this year if Tony Bennett hadn't asked her to collaborate on his jazz album.

The 28-year-old Applause singer was so upset about the mixed reviews her Artpop album received earlier this year that she wanted to give up singing altogether.

Speaking to Parade magazine she explained: ''Six months ago I didn't even want to sing any more. I was so sad. I couldn't sleep. I felt dead.

''I'm not going to say any names, but people get irrational when it comes to money. If you help an artist, it doesn't give you the right, once the artist is big, to take advantage of them.''

However, the 28-year-old star then teamed up with Tony Bennett to create their forthcoming album Cheek to Cheek and believes the 88-year-old legend saved her life and her career.

She said: ''I tell Tony every day that he saved my life. He wanted nothing but my friendship and my voice.''