Tus kws qhia yuav tsum txhim kho lub peev xwm ntawm nws cov tub ntxhais kawm ntawv, pom lawv txoj kev nyiam thiab ua raws li qhov kev coj ua. Thiab tus nkauj nyab no yog qhov zoo tshaj plaws ntawm kev ua si tawv flute. Qhov peev xwm no yuav pab tau nws ntau, tsis yog hauv nws txoj kev kawm xwb, tab sis kuj nyob hauv lub neej txhua hnub. Qhov tseem ceeb tshaj plaws yog kev xyaum ua txhua hnub thiab ntawm cov flutes sib txawv.
Zoo, ib nrab ntawm cov kwv tij thiab ib nrab cov viv ncaus tsis muaj feem cuam tshuam, yog li nws tsis tuaj yeem suav tias yog yam phem lossis kev ua tsis ncaj ncees. Nws tsis yog qhov xav tsis thoob tias tus txiv neej laus thiab tus ntxhais, tsis muaj kev sib deev tsis tu ncua thiab yuav luag txhua hnub nyob ib puag ncig, dheev hnov zoo li kev sib deev rau ib leeg. Xav tias tus ntxhais nyiam nws (tus txiv neej ces tsis muaj lus nug), kuv xav tias lawv yuav xyaum ua tej yam zoo li no ib ntus.