Three people playing rock music , one of them is wearing a hat and a black pants with a black t-shirt and singing and playing the guitar .
It is probably not the case that two musicians are testing out a third to see if he would make a good singer for their rock group .
It is likely that two musicians are testing out a third to see if he would make a good singer for their rock group .
It is probably not the case that two musicians are testing out a third to see if he would make a good singer for their rock group .
Two musicians are testing out a third to see if he would make a good singer for their rock group .