'1883' star Tim McGraw says working with wife Faith Hill enhances his performance: 'I better straighten up'

The country stars play James and Margaret Dutton in Taylor Sheridan's new "Yellowstone" prequel series.

"In the middle of a scene, there are little gestures that she'll give me, like when she knows that I'm off track a little bit, she'd give me that look to set me back straight," he admitted.

"Just like when we're singing on stage and I'm singing flat on my harmony part. I'll get that look from her and I know I better straighten up because I'm not doing this well enough. So we definitely have that sort of communication between us," McGraw added.