Ana:Hey David, did you ever wonder if conductors are actually important?
David:Without conductors we wouldn't have anyone to drive trains.
Ana:Not a train conductor, silly, a conductor for an orchestra of musicians.
David:Oh!Well, if all the musicians have sheet music, then I believe the conductor would not be necessary.
Ana:Then you would be wrong!Conductors make a difference.In a study, scientists attached a monitoring device to the baton of conductors.They placed more on the violinist's bows.
David:What did they discover?
Ana:That the more forceful the conductor was at leading his orchestra, the more in tune the musicians were to him, and to the music they played.
Source: NPR (http://n.pr/10QexP7)