Mood: The mood of the video appears to be melancholic and introspective, with a hint of nostalgia. The theme seems to revolve around heartbreak, longing, or a romantic ballad, given the title 'Dusokute-Duet' and the song 'Margarita With A Straw'. The overall emotion conveyed is one of wistfulness and possibly yearning.

Environment: The setting seems to be an indoor location with a green background, possibly a studio or a room with a blurred decor. The presence of a person wearing headphones suggests a quiet, personal space where one can listen to music and reflect.