“Hot Air Balloon” is a free sci-fi ambient soundscape on Sound Bubbles — systems humming under human life. Its summer character sits inside the wider sci-fi catalog: detail in the foreground, weather and room tone holding the horizon. Lin framed the garden so you can use it for ASMR-friendly listening and unwind without fighting a rigid loop. Around 7 sound bubbles carry the mix — each one a movable source in space. Expect a palette of hot, air, balloon, summer, blended so no single layer has to carry the whole hour. Rearrange the field so close sounds feel intimate and distant ones sketch the horizon. Use Save Garden if you want your own public remix, or keep listening and let Wander take you elsewhere. Play it as a free online ambient soundscape — white noise beds, nature texture, and spatial motion in one place.