Following is the program of the Pop Concert at Symphony Hall tonight: 1. March, "Loraine," Ganne 2. Overture, "Martha," Flotow 3. Selection, "Geisha," Jones 4. Waltz, "Gros Wien," Strauss 5. Country Dance, Nevin 6. Ballet Music, "Sylvia," Delibes 7. Malaguena, Moszkowski 8. Selection, "Aida," Verdi 9. Overture, "Fledermaus," Strauss 10. Waltz, "Barcarole," Waldteufel 11. Selection, "Woodland," Luders 12. March, "El Capitan," Sousa