Multi-instrumentalist, Bad Seed and Dirty Three member Warren Ellis talks about his ongoing creative and personal relationship with Nick Cave and how honoring Nick's late son Arthur in music was such a difficult and important piece of work.

Ahead of the release of a new performance film, This Much I Know To Be True, showcasing the songs recorded with Cave on the Ghosteen and Carnage albums, Ellis talks to Sean Rocks on RTÉ Arena - listen above.

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This Much I Know To Be True screens for one night only at the IFI, Dublin, on May 11th, 2022 - find out more here. Tune into to RTÉ Arena live nightly from Mon-Fri on RTÉ Radio 1 from 7pm - or listen back here.