Atraganta comes from the verb atragantar, which means to choke or get choked up. It's a vivid and somewhat dramatic word that isn't as common as everyday verbs.
In the song, the lyric "Ahora que septiembre se atraganta" (Now that September chokes) uses this word metaphorically. It suggests that the month of September, often associated with new beginnings, feels suffocating or difficult for the singer, perhaps due to a painful memory or the end of a relationship. This personification of a month makes the word particularly evocative.
Dani Fernández's "Ahora" [Now] is a really intense song about the end of a relationship, focusing on that moment when everything is truly over. He uses a lot of imagery to show this finality, like "Ahora que es mi última calada" [Now that it's my last puff] and "Ahora que el invierno ya llegó" [Now that winter has arrived], suggesting a cold, definitive end.
He talks about how things that used to matter, like the taste of coffee, now mean nothing: "Ahora que el café no sabe a nada / Y nada ya me importa su sabor" [Now that coffee tastes like nothing / And its flavor no longer matters to me]. The lyrics really drive home the idea that there's nothing left between them, repeatedly stating "Ya no queda nada de nosotros" [There's nothing left of us] and dismissing past arguments with "Basta ya de ¿Cómo? y ¿Cuándo? / ¿Quién tuvo razón?" [Enough of how and when? / Who was right?]. It's a powerful look at the emptiness that follows a big breakup.