The original track was remade into an orchestral version for the documentary series.
"(ocean) bloom" is a new version of the Radiohead track "Bloom," which came out in 2011 on The King Of Limbs. According to the BBC, Yorke recorded new vocals for the track while the BBC Concert Orchestra contributed an orchestral arrangement. In a press release, Yorke said "'Bloom' was inspired by the original Blue Planet series so it's great to be able to come full circle with the song and reimagine it for this incredible landmark sequel." He added, "Hans is a prodigious composer who effortlessly straddles several musical genres so it was liberating for us all to work with such a talent and see how he wove the sound of the series and 'Bloom' together." The track is appearing in a five-minute prequel that screens on September 27th.