What is Lindel's song from Ancient Magus Bride based on? The song currently has no official title. But the first two words are "Iruna Etelero", thought it is often called "Flower Song". Some have theorized it's Finnish.

Is it just random syllables?

(Song link: https://www.youtube.com/watch?v=uLky9RjDXoY)
I just looked up info for the soundtrack for Season 2 and CDJapan has it on preorder to be released on March 28th. I also looked around at other sites and all of them say the 28th, so I am going to say unless we hear otherwise, this should be the official release date.

Also, pertaining to the lyrics, I ran them through Google Translate and it tagged them as Finnish, but the only words that were translated to English were Satoa (Harvest) and Toimessez (Actress)

However, I am running each word (Japanese) through to see if I get anything. Here is what it gave me


  Iruna (Bengali) eteruro (Japanese)
    Please obtain
  
  Iruna eteruro
  Please obtain
  
  Nadia, ēzeruvu~ōte (Swahili)
  Nadia, wisely ~ ok
  
  Reizeruko, (Swahili) mikemesuta (Igbo)
  Resurrection, lightning
  
  Iruna eteruro
  Please obtain
  
  Iruna eteruro
  Please obtain
  
  Sātoa, (Swahili) aimeltewa (Swahili)
  Offer, beautifully
  
  Reizeruko, mikemesuta
  Resurrection, lightning
  
  Āmeru, mikerumo (Igbo)
  Eat, slide 
  
  Toimesesu, (Latvian) mikerumo (Igbo)
  For the better, slide
  
  Maseri, (Swahili) īmekuu~ōze (Latvian)
  Masters, you know 
  
  Tōwa~ana, (Igbo) Mizaimesuta (Latvian)
  Drums, peeling
  
  Kesera, (Swahili) Kesera (Swahili)
  The trial, the trial 
  
  Kesera, (Swahili) Setoru (Japanese)
  The trial, settle
  
  Āmeruvu~a, (Igbo) Eterurovu~o (Japanese)
  Activate ~ a, Get it now ~
  
  Mītetevu~a, (Swahili) Maria, (Latin) Ezeruvu~ōte, (Swahili)
  Defense, Maria, Wisdom ~ Oto 
  
  Reizeruko, mikemesuta
  Resurrection, lightning


So yeah, it makes some sort of sense, but who knows if that is what it actually is saying.