Except for reruns of “The Lawrence Welk Show,” there just isn’t a lot of polka music on television these days. That does not suggest, however, that polka is having a bad time. In fact, polka is hotter ...

For more than three decades, The Lawrence Welk Show was a staple in American living rooms, with its trademark champagne music and gentle humor. Hosted by North Dakota-born bandleader Lawrence Welk, ...