The first image shows a baduj angklung from Djogjakarta, Indonesia. It is an idiophone, a musical instrument which vibrates to make a sound when struck, scraped, or shaken, like a bell, gong, or rattle.
Angklung is a musical instrument that originates in West Java in Indonesia and is associated with Sudanese culture. They are constructed from bamboo tubes of different sizes that are suspended from a frame and shaken to produce different pitches. Each angklung is tuned to one octave, with small ones playing higher notes and bigger ones playing lower notes. Often each musician will be responsible for one angklung and songs are played collaboratively. Angklung are also played as part of the gamelan ensemble, which is a traditional form of Indonesian music that features interlocking rhythms and melodic patterns.