The musical instruments are; a) gangsa b) bungkaka c) patatag d) ludag e) tongali f) tambi g) kimbal/sulibao h) sageypo i) paldong j) diw-diw-as k) uliban l) patangguk m) onnat -- I don't know the common for these, sorry. And I don't know if it's complete or not :)
There's no instrument called the string instrument. String instrument is a category of instruments which includes the guitar, the harp, the violin, the fiddle, the banjo, and the cello. Add to that list the Sitar.
A percussion instrument is struck, so any instrument that is NOT struck is NOT a percussion instrument, for example, Strings: violin, cello, double bass. Brass: trumpet, cornet, trombone Woodwind: oboe, piccolo, saxophone