Since he released his first album 11 years ago, bandleader, trumpeter and composer Matthew Halsall has proved to be one of British jazz's standout talents. In recent years he's delved into soul-jazz and big band jazz territory, so it's intriguing to find that "Oneness" is a much more spiritual, pared-down and minimalistic affair. Using a mixture of droning Indian instrumentation, languid and leisurely harp motifs, selective horn solos, melancholic trumpet lines and occasional traditional jazz instrumentation, Halsall has conjured up a series of meditative pieces that count among his most beguiling works to date. It may surprise a few listeners, but many more will find it enchanting, otherworldly and emotion-rich.