This is the history of how native Yapese learned to use indigenous betel nuts (areca nuts). Native Yapese added pepper leaf and coral lime powder to betel nut and called it langad. Langad was not used by the native Yapese until it was introduced by a friendly ghost who was stranded on the main island of Yap several hundreds of years ago. The ghost, whose name was Llong, was left behind by his companion Luug. Llong then settled himself at the Ron’uw village in the northwestern part of the island. For some reason, Llong relocated himself to Gilyaboch village on the Gakaan peninsula on the western side of the island. There he lived and began making and setting fish traps along the water. Day after day, the natives saw him and wondered what he was doing in the water and who he was. The natives approached him and became friends with him. Llong taught them how to make fish traps and how to set them in the water to catch fish. When setting the traps, branchy corals were required to be placed on and around the traps to cover them. Collecting branchy corals almost every day for the traps, the natives asked Llong if those corals were edible, seeing that they were almost everywhere in the fishing ground. He replied that they were edible, but needed to be processed in advance. So they collected some of the branchy corals and brought them onto land. Thereafter, Llong taught and showed them how to make lime powder out of branchy corals. Llong explained that the powder shouldn’t be taken alone, but could only be taken with two more elements. Llong ordered the natives to bring betel nuts and pepper leaves. Native Yapese at that time used the trunks of betel nut trees only for building houses, but did not use the nuts. Llong gathered everything up and demonstrated how it use it. He added a little amount of powder in a split betel nut and wrapped a piece of pepper leaf around it, putting it in his mouth and chewing on it. After he chewed the mixture, he spat the bloody red liquid out of his mouth. It looked very interesting to the natives, so they tried it right away. Eventually, everyone had a chance to try the newly discovered products. They all felt high from using them and began singing, dancing, and enjoying the sensation until they all felt tired and wanted to take a nap. During their naps, Llong bestowed his blessings upon the langad ingredients so the natives would have the interest or the urge to use them again. When they woke up from the short nap, they were sober and all surprised to see the redness on their lips as well as the spit marks on the ground. They got worried and concerned that their chief in Lamear village might find out what they had done, so they kept it a secret from him. Later, they decided to pay the chief a visit and present him the langad. The chief tried it for the first time and was very impressed. He showed his great excitement, saying that he had never experienced such a euphoria. From then on, he proclaimed the tradition that the people should offer him the langad on a regular basis. This is the story of how native Yapese started using betel nuts. It began in Gilyaboch village, but quickly spread to their chief in Lamear village and to other allies on the island. This knowledge of chewing betel nut with coral lime powder spread throughout the island and became a tradition of the Yapese culture hundreds of years ago. Langad is now a part of daily lives in Yap. It is widely used for social gatherings, community meetings and events, funerals, and so much more.

According to statistics data in 2009, the Hmông people in Vietnam had a population of over one million people, making them one of the larger ethnic minorities in northern Vietnam. The Hmông reside mostly in the provinces of Hà Giang and Lào Cai. They have diverse folk music and folksongs. The khèn (or also known as kềnh) is an aerophonic instrument made up of six bamboo tubes of different lengths. These tubes are put through a wooden resonator. The upper part of resonator is small, connecting to another bamboo section that forms a blowing pipe. A small bronze reed is attached at the part put through the wooden resonator on each horizontal bamboo tube. The shortest and the longest bamboo tubes have two parallel reeds, producing unison sound. Pressing holes are outside the resonator. The player covers the pressing hole of the section and then blows air into it to make the reed vibrate and produce sound. Each tube creates a different sound depending on the length and size. The Hmông playing and pressing techniques include clapping, tremolo, and staccato as well as simultaneity, chord, and harmony. Kềnh of the Hmông people is a polyphony instrument with a bit cracked sound. The register of Kềnh is about an octave. The Hmông people blow the Kềnh during entertainment activities, at funerals, or on the way to the market. Traditionally, the instrument is only for men to accompany singing.

According to statistics data of 2009, Phù lá ethnic minority had over ten thousand people, mostly living in Lào Cai. Phù lá ethnic minority lives in different small hamlets, each of which usually has between ten and fifteen roofs. The Phù lá lives in a region with many other ethnic minorities, such as Hmông, Dao, and Tày. The village elders or chiefs and family heads have a significant role in managing most affairs in the hamlets. The Phù Lá still preserves their traditional culture with the important annual rituals, such as the Lunar New Year (Tết Nguyên Đán), Holly Forest Worship Ceremony (Cúng thần rừng), the July Festival (Tết tháng bảy), the new rice festival at the beginning of October (tết cơm mới đầu tháng 10), Naming ceremony for baby (đặt tên con), funerals (tang ma), etc. Forms of folk music in the lives of Phù Lá people has not been much collected so far. The musical piece “A happy tune” is a solo for a string instrument meant to entertain Phù lá people. This is one of the few Phù lá recordings. It was recorded by the Vietnamese Institute for Musicology in 1959.

Nam ai, which can be called Ai giang nam, is a basic melody in the Ca Huế repertoire. According to legend, King Nguyễn Phúc Chu, who was the Minh King in the Nguyễn dynasty (1691-1725), composed Ai giang nam, which is the forerunner of Nam ai. It can be concluded that the Nam ai melody was born in the eighteenth century. The Nam ai melody is played with slow tempo and has a melancholy nuance. As a result, it was not allowed to be performed in the court, and it is sometimes used in sacrifice ceremonies or funerals.