On the heels of a new Dolly Parton book, another classic country star, Willie Nelson, 87, and his sister, Bobbie Nelson, 89, announced that they’ve penned a memoir.

The tome, “Me and Sister Bobbie: True Tales of the Family Band,” will detail their family bond playing music together, with alternating chapters by each sibling.

It’s out Sept. 15 from Random House. The duo also plans a picture book, to be released next year.