I saw an online instructor who wasmisleading that Avicii s song shame on me was in the key of C-majer and he himself couldn t identify the chords and left a misleading track to students. but i could hear the chords souning wrong and thanks to the chord identification plugin which helped me to find out right chords and online i found the song is actually b minor. that song sounds super happy. now i am confused how to determine if a song is in a major key or minor key for song analysis?