Watch the videos in order
Don't have to watch the whole video, just 2 minutes of the long videos :)
This first video is of two great violinists, Yehudi Menuhin and David Oistrakh playing the Bach Double Concerto. Sorry the video is poor quality, it's old :)
Mark O'Conner violinist and Wynton Marsalis trumpet watch at least between the 2 and 5:30 minute mark
Edgar Meyer is probably the best bass player in the world today. Watch the whole or most of the video.
William Primrose was one of the best Viola players ever. This piece written by Bella Bartok was composed for him to play. It is one of the most difficult viola pieces out there. Sorry there is no video, listen to the first two minutes.
YoYo Ma is one of the world's best cellists. He played at a few presidential inaugurations. The Elgar Cello Concerto is one of the most famous and beautiful in the cello repertoire. Listen to the first two minutes at least