The album that was Manfred Mann's commercial breakthrough was a departure from the previous albums made with the Earth Band. Though the personnel are the same and the musicianship is as mind-blowing as ever, the songs are shorter and punchier, in some cases more poppy. This is not to say that the band had sacrificed a bit of ingenuity or complexity, but the long jams are gone in favor of briefer sound portraits. Nightingales and Bombers included Manfred Mann's first cover of a Bruce Springsteen song, the album-opening "Spirits in the Night," a single that charted, and became one of the only pieces written in 10/4 time ever to do so.