Gary Allan's "Nothing On but the Radio" has reached No. 1 on Billboard's country airplay chart in the publication's Dec. 4 issue. Singles debuting on the chart include Brooks & Dunn's "It's Getting Better All the Time" at No. 52, Martina McBride's "God's Will" at No. 56 and Sara Evans' "Tonight" at No. 58. Shania Twain's Greatest Hits maintains the No. 1 position on the country albums chart. Debuting albums include Larry the Cable Guy's A Very Larry Christmas at No. 8 and Joe Nichols' A Traditional Christmas at No. 47.