Two guys performing rock concert , one has short blond-hair who is singing , and the second has long blond-hair and is jamming out on his guitar .
It is probable that two guys performing rock concert , one is singing falsetto , and the second is playing a acoustic guitar .
It is probable that two guys performing rock concert , one is singing falsetto , and the second is playing a acoustic guitar .
It is impossible that two guys performing rock concert , one is singing falsetto , and the second is playing a acoustic guitar .
Two guys performing rock concert , one is singing falsetto , and the second is playing a acoustic guitar .