Lady Gaga almost quit music earlier this year.
The 'Applause' hitmaker admits she almost gave up her career for good six months ago after her third album 'ArtPop' received mixed reviews from critics.
Speaking in Parade magazine, she said: "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."
Meanwhile, Tony recently said he was keen to team up with the blonde beauty again in the future because they get along so well and he admires her talent.
He said previously: "There were no moments of craziness or eccentricity when I was with her. She said that when she was 13 and singing jazz, 'Nobody ever paid any attention to me.'
"We get along great and she's just such a good improvised jazz singer. I think the public are going to say, 'I knew she could sing well but I didn't know she could sing THAT well'.
"I just love her and want to work with her as many times as possible in the future."