Snow, winter and .... E major ?

Just finished writing the song "Snowflakes" , based on a poem of the same title by Henry W. Longfellow. It will be part of "Love and variations", my song-cycle for soprano and baritone in-progress .

After a sort of atonal introduction, the piece went itself to E-major. That was the tonality of my song "Winter" from Canda Empat Penjuru . And no matter how hard I resisted, that tonality kept coming back. Now, is there a relationship between that tonality and my impressions (or expressions ?) of snow ? Or cold weather ? Or the darkness of winter ? ... I wonder ...