Following is the programme of the Pop Concert at Symphony Hall tonight: 1.  March, "Szechanyi,"  Fahrbach 2.  Overture, "Le Roi l'a dit,"  Delibes 3.  Waltz, "Doctrinen,"  E. Strauss 4.  Selection, "Aida,"  Verdi 5.  Oriental March,  Zach 6.  Selection, "Singing Girl,"  Herbert 7.  (a) A Dream,   (b) Bosnian Legend and Kolo, (National Dance),  Komzak 8.  Waltz, "Dream of Love,"  Fahrbach 9.  Overture, "Semiramide,"  Rossini 10.  Gavotte from "Mignon,"  Thomas 11.  Waltz, "Grubenlichter,"  Zeller 12.  March, "Wien bleibt Wien,"  Schrammel