See Dolly Parton's New Duet Video - For A Cause

That Dolly Parton is always up to something!

This time, she's lending her voice to a new song by popular bluegrass group The Grascals. In the clip (directed by cancer survivor David Corlew), the country legend sings a song written by Grascals member Jamie Johnson and his wife, Susanne Mumpower-Johnson, after they visited the Memphis branch of St. Jude Children's Hospital and were inspired by the cancer-stricken kids they met.

The bonus track is featured on the group's new Cracker Barrel release, The Grascals & Friends -- Country Classics With A Bluegrass Spin (out Jan. 10), from which proceeds will be donated back to the hospital.

Brad Paisley, Dierks Bentley and The Oak Ridge Boys also make appearances.

Check out the video above and pick up the disc at all Cracker Barrel stores next week!

By Ian Drew for To read more of Ian's blog, click here, and don't forget to follow him on Twitter.