Nelson and Allen's attempt to bridge orchestral arranging and pop entertainment doesn't quite land.
The first thing you hear is brass — Nelson's signature sound, full and carefully voiced — but something feels off. The arrangements sit oddly between two worlds: they have the shape and sophistication of Nelson's jazz work, but they're wrapped around pop material that doesn't quite belong. Steve Allen's electronic harpsichord comes in and out like a guest who showed up to the wrong party. The rhythm section moves along competently, but there's no real swing happening, just professional musicianship going through paces.
This wasn't typical Nelson territory. He was a serious composer and arranger, someone who brought real craft to orchestration and jazz exploration. Soulful Brass (1968) finds him trying to straddle entertainment and artistry, letting Allen's pop sensibilities pull the session away from what made his best work compelling. The brass arrangements themselves are clean and well-executed, but they feel like they're serving songs that don't need this level of orchestral attention. Douglas Payne at AllMusic noted that these were watered-down arrangements framing Allen's electronics, and that assessment holds up — there's competence without conviction.
This is a record for completists, or for people curious about what happens when two strong personalities with different agendas share a session. It's not where to start with Nelson, and it's probably not where you'll return to often.