Hi friends and sorry to bother you with what is a very small question. I am translating a song, and in a wonderful display of reflexive irony that song uses the word "song" several times. So - "песня" and "песню" - what I'm reading is telling me they arew interchangeable, but I don't want to be fooled by an autobot translator... can anyone tell me, is this right? Is there any "real" difference between these two terms or is it just a different way of pronouncing the same word? And again, sorry for asking a very small little question. =)