Proto-IE: *som-en- <PIH *sH->
Meaning: song
Hittite: ishamai- c. 'Lied, Gesang' (Tischler 378ff.)
Old Indian: sā́man- n. 'hymn, song of praise'
Old Greek: hǘmno-s m 'hymn, ode, in praise of gods or heroes'
Russ. meaning: песня
References: Tischler 378ff.
Comments: Cf. Greek ói̯mǟ, ôi̯mos 'Lied, Gesang, Sage' (< *ojm-, not *omj-)