Following is the program for the Pop Concert at Symphony Hall this evening: 1.  American Fantasy,  Herbert 2.  Overture "Si j'etais Roi,"  Adam 3.  Selection, "Babes in Toyland,"  Herbert 4.  Waltz, "Artists' Life,"  Strauss 5.  Overture, "Raymond,"  A. Thomas 6.  (a) Yesterthoughts,  Herbert (b)Poncinello,  Herbert 7.  "La Belle en Bois Dormant,"  Tschaikowsky 8.  Selection, "Wizard of the Nile,"  Herbert 9.  Selection, "Mile. Modiste,"  Herbert 10.  Waltz, "Jolly Fellows,"  Vollstedt 11.  Selection, "It happened in Nordland,"  Herbert 12.  March, "Tambour Battant,"  Messager