What do you do after making numerous chart-topping albums and several collaborations with some of the biggest names in jam-band rock? For singer and songwriter Keller Williams, the adoration of the under-10 crowd and their parents seemed to be the challenge he needed. With his latest album, “Kids” — his first CD for children and families and his 16th solo album to date — Williams is winning the hearts and imagination of young music lovers as well as his already grown-up fans. When he comes to Richmond, Williams plans to play two shows, the first focused on the little ones with songs, an interactive drum circle and a book signing of his recently released children’s book, “Because I Said So.” And for his older fans, he’ll perform a show well past the kids’ bedtimes. Williams gets multigenerational at the National on Thursday, Dec. 29, with the kids’ show at 2:30 p.m. and the adult show at 9. $15-$21. 612-1900.