To break down the title, the sense of a forest is achieved in this track primarily by the sounds of chirping birds; some rustling of foliage would probably enhance the atmosphere. The sense of elvishness is achieved primarily by some ethereal music, sounding as if wind chimes could hold out their notes. The entire effect is very pleasing, although if you play the track too loud, the "wind chimes" may begin to sound shrill, so keep the volume low.