Country foursome Lonestar has made pop music history again by simultaneously topping both the Billboard Hot 100 chart and the Hot Country Singles & Tracks chart. “Smile,” their current single, is at No. 1 on the country chart, while “Amazed,” their long-running hit, released for sale recently in a re-mixed version, is at No. 1 on the Hot 100 chart. No artist in any genre has accomplished that feat since the implementation of sales-tracking SoundScan computer technology, according to a news release from the group’s label.