It looks like Mamamoo's Solar is another artist that has a small surprise for fans from Latin/South America. In the newest teaser to her solo debut single "Spit it out" Solar sings:
"Sin prisa pero sin pausa"
This means: "Without hurry but also without a pause/slowly but surely".
It's not the first time Solar decided to sing in Spanish, she already covered "Despacito" at one of MAMAMOO's concerts.
The newest teaser reveals that some items on were set on fire and we can also get a glimpse of choreography.
Also under this teaser in youtube section comments you can find comments from Solar herself and from TC Candler.