All that any of us instrumentalists are ever trying to do is sound like singers. Phrasing, intonation, blend, interpretation, dynamic contrast. Everything is modeled by singers.
This clip of a male Russian Orthodox choir made me melt. So much soul. The name of the group is not listed but the baritone soloist is Chernegov-Nomerov Egor. What I wouldn't give to be able to sing like that! They are singing Chesnokov's "Gabriel Appeared".
The video is not great quality but the audio is good and the performance is unreal.