Opposite

In a world of dandelions
I'm the seed floating by,
never fitting in.
Always accepted,
never rejected,
but the wind keeps me tumbling on.
In a world full of voices
I feel like falsetto,
ethereal yet visibly present.
I make songs shine,
but never can claim a melody of my own.
If the world was full of red marbles
I'd be the blue one.
If everyone else was swimming in the sea
I'd be flying with the birds.
Every day feels like opposite day to me.