After World War II, Johnson made the transition to rhythm and blues, recording for King in Cincinnati and having a hit in 1948 with "Tomorrow Night" written by Sam Coslow and Will Grosz. The topped the "Billboard" Race Records chart for 7 weeks and reached number 19 on the pop chart with sales of three million copies. A blues ballad with piano accompaniment and background singers, the song bore little resemblance to much of Johnson's earlier blues and jazz material. The follow-ups "Pleasing You", "So Tired", and "Confused" were also R&B hits.