Halo Ivan, saya sudah mendengarkan audio lagu tersebut, dan dapat saya pastikan bahwa itu BUKAN BAHASA INDONESIA. Menurut saya bahasanya seperti semacam bahasa Hindi karena jenis melodi lagunya sangat mirip dengan lagu-lagu dalam film Bollywood. Tetapi Indonesia juga memiliki jenis musik seperti itu, yang dinamai Dangdut. Namun jika Anda bertanya tentang bahasa lagu tersebut, saya pastikan itu bukan Bahasa Indonesia. Semoga jawaban saya bisa membantu Ivan.

Hey Ivan, no problem man. It's my pleasure to help you. I can say it was very challenging to determine the language of that song, although it's sounded very similar to Hindi language (especially if we just judge it from the melody of the song), but as you said even the Hindi native speakers said that it wasn't Hindi language, so I'm even getting more curious to know the answer :)

Rista, Ben, thank you very much for your attention! Thank you for your suggestions! I asked native speakers of Hindi and they didn't find Hindi out in the song. But they pointed me out of lyrics similarity on resources liked Musixmatch or Shazam. ;) I appreciate your help, my friends! I am grateful for your empathy!

Hey Ivan, I have heard your audio and I could say it's not Indonesian Language. As I heard, some words sound like Hindi language such as Tum, and Suna. I would like to check the language if you are ok to write down some sentences from the lyrics. Cheers!