Amanecemos comes from the verb amanecer, which means 'to dawn' or 'to wake up'. It's a beautiful and evocative word that captures the beginning of a new day.
In the context of the song, it likely refers to the act of waking up together or experiencing the dawn, suggesting a sense of continuity, hope, or perhaps the start of something new. It's a more poetic way to express waking up than just despertamos.