Melodies from Indus Valley Civilization?

[W.11]

https://en.wikipedia.org/wiki/Samaveda

Although early vedic texts are dated between 1500-1100 BC, There is an early vedic text called samaveda which is dated to 1200 BC and contains verses from rigveda (1500 BC) set to music.

According to some scholars, samaveda contains some of the earliest notated texts in the world, a hurrian hymn notation is a seven note based text dated to 1450 BC. According to them there is evidence that samaveda melodies are earlier than the text itself and the reason is some portions of verses dont fit with the melody.

Samaveda may represent some of the melodies which probably existed in the Indus Valley Civilization.

Samaveda samhita is not meant to be read as a text, it is like a musical score sheet that must be heard.[1]

Staal states that the melodies likely existed before the verses in ancient India, and the words of the Rigveda verses were mapped into those pre-existing melodies, because some early words fit and flow, while later words do not quite fit the melody in the same verse.[1] The text uses creative structures, called Stobha, to help embellish, transform or play with the words so that they better fit into a desired musical harmony.[18][19] Some verses add in meaningless sounds of a lullaby, for probably the same reason, remarks Staal.[1] Thus the contents of the Samaveda represent a tradition and a creative synthesis of music, sounds, meaning and spirituality, the text was not entirely a sudden inspiration.[1]

The portion of the first song of Samaveda illustrates the link and mapping of Rigvedic verses into a melodic chant:[1]