Daechwita (literally "great blowing and hitting") is a genre of Korean traditional music consisting of military music played by wind and percussion instruments, generally performed while marching. Instruments used include nabal (brass horn), nagak (seashell horn), and taepyeongso (shawm), with jing (gong), jabara (cymbals), and yonggo (hangul: 용고; hanja: 龍鼓; drum painted with dragon designs and played with sticks).
This style of Korean military music is often used in the reenactment of the Guard Changing Ceremony at Seoul's Gyeongbok Palace, as well as in Deoksugung Palace. A special daechwita today is under the service of the Traditional Guard Unit, Republic of Korea Army, and is the only one that also has the Ulla (small tuned gongs) in its instrumentation. This is the same case for traditional Korean bands outside the homeland.
Chwi-ta (or choi-ta) is the name of the military music played in military processions and on such occasions as when the gates to military headquarters were opened or closed.
Everything I've ever done
And everything I have
Amounts to nothing
Keeps on crushing you within
Sometimes you want to be alone
It won't find the time to understand
And concentrate on everything you see
If you think about it hard you'll know