These videos use classical music and/or musical instruments!
"1812 Overture" by Pytor Ilyich Tchaikovsky
"Ride of the Valkyries" by Richard Wagner
"In the Hall of the Mountain King" by Edvard Grieg
"Eine Kleine Nachtmusik" by Wolfgang Amadeus Mozart
"The Blue Danube" by Johann Strauss
"Waltz of the Flowers" by Pytor Ilyich Tchaikovsky
"Symphony No. 5" by Ludwig van Beethoven
"William Tell Overture" by Gioachino Rossini
"Dance of the Sugar Plum Fairy" by Pytor Ilyich Tchaikovsky
Cello Wars by The Piano Guys
"MIssion Impossible" by The Piano Guys