▁but ▁any ▁particular ▁instrument ▁may ▁have ▁from ▁zero ▁to ▁seven ▁finger ▁holes . ▁The ▁instrument ▁may ▁include ▁a ▁finger ▁hole ▁covered ▁by ▁the ▁thumb . ▁ ▁The ▁finger ings ▁for ▁various ▁pitch es ▁are ▁not ▁standard ized ▁across ▁all ▁Native ▁American ▁fl utes . ▁However , ▁many ▁contemporary ▁Native ▁American ▁fl utes ▁will ▁play ▁the ▁primary ▁scale ▁using ▁the ▁f ing ering ▁shown ▁in ▁the ▁adjacent ▁diagram . ▁ ▁While ▁the ▁pent at onic ▁minor ▁scale ▁is ▁the ▁primary ▁scale ▁on ▁most ▁contemporary ▁Native ▁American ▁fl utes , ▁many ▁fl utes ▁can ▁play ▁notes ▁of ▁the ▁chrom atic ▁scale ▁using ▁cross - f inger ings . ▁ ▁Tun ing ▁▁ ▁Native ▁American ▁fl utes ▁are ▁available ▁in ▁a ▁wide ▁variety ▁of ▁keys ▁and ▁musical ▁temper aments ▁— ▁far ▁more ▁than ▁typically ▁available ▁for ▁other ▁wood wind ▁instruments . ▁Inst ru ments ▁tun ed ▁to ▁equal ▁temper ament ▁are ▁typically ▁available ▁in ▁all ▁keys ▁within ▁the ▁range ▁of ▁the ▁instrument . ▁Inst ru ments ▁are ▁also ▁craft ed ▁in ▁other ▁musical ▁temper aments , ▁such ▁as ▁just ▁in ton ation , ▁and ▁pitch ▁standards , ▁such ▁as ▁A 4 = 4 3 2   Hz . ▁ ▁The ▁War ble ▁▁ ▁A ▁distinct ive ▁sound ▁of ▁some ▁Native ▁American ▁fl utes , ▁particularly ▁traditional ▁fl utes , ▁is ▁called ▁the ▁" war ble " ▁( or ▁" war bling "). ▁The ▁war ble ▁sounds ▁as ▁if ▁the ▁fl ute ▁is ▁vac ill ating ▁back ▁and ▁forth ▁between ▁distinct ▁pitch es . ▁However , ▁it