Symphony No.8 in G, Op. 88
The background music you are hearing is the forth movement.
Dvorak's Symphony No. 8 in G, Op.88 has four movements. Within this symphony, Bohemian folk music is full-blooded, rhythmic and usually joyous. This symphony represents an ideal wedding of folk and art elements. The 'symphonic' opening soon yields to folk-like phrases, mainly on woodwind, and in the adagio there is an unashamed imitation of a folk band. One variation in the finale is a boisterous dance with horns literally going over the top.