▁focus ▁of ▁the ▁Monday ▁series , ▁" Front iers ▁of ▁Dem ocracy ," ▁including ▁such ▁subjects ▁as ▁" Front iers ▁of ▁Work ▁in ▁Indust ry ," ▁" S cience ▁& ▁Human ▁Progress ," ▁" He alth ▁and ▁Food ," ▁" He alth ▁in ▁Child hood ," ▁" Front iers ▁of ▁Work ▁on ▁the ▁Farm " ▁and ▁" Front iers ▁in ▁the ▁Prof essions ." ▁ ▁T ues days ▁were ▁devoted ▁to ▁" F olk ▁Music ▁of ▁America " ▁and ▁other ▁musical ▁gen res . ▁During ▁ 1 9 3 9 - 4 0 , ▁Alan ▁L om ax ▁wrote , ▁produced ▁and ▁directed ▁a ▁ 2 6 - week ▁historical ▁over view , ▁the ▁" American ▁Fol k ▁Songs " ▁series , ▁a ▁survey ▁of ▁English ▁language ▁folk ▁songs ▁from ▁the ▁hold ings ▁of ▁his ▁under fund ed ▁Archive ▁of ▁American ▁Fol ks ongs . ▁ ▁A ▁work ▁by ▁composer ▁William ▁Grant ▁Still ▁was ▁commission ed ▁by ▁CBS ▁in ▁ 1 9 4 0 . ▁In ▁ 1 9 4 9 , ▁for ▁The ▁American ▁School ▁of ▁the ▁Air , ▁Ama de o ▁De ▁Fil ippi ▁composed ▁" R aft s man ' s ▁Dance ," ▁based ▁on ▁two ▁Ohio ▁river ▁songs , ▁" R aft s man ▁Jim " ▁and ▁" Go ing ▁Up ▁the ▁River ." ▁ ▁American ▁expl or ers ▁and ▁expl oration ▁were ▁heard ▁in ▁" New ▁Hor iz ons " ▁on ▁Wed nes days , ▁with ▁" T ales ▁from ▁Far ▁and ▁Near " ▁on ▁Th urs days