Turn up the volume and sing along. Sometimes there’s nothing better for a hymn than a full orchestra playing it and a couple thousand people singing it. And I think they’re in the Royal Albert Hall, although I’m not 100% sure of that.
Anyway, this is the ancient Welsh hymn, Cwm Rhondda, in one of its English-language versions, Guide Me, O Thou Great Redeemer. I’ll be surprised if they don’t sing this one in Heaven.