Keep in Touch is a musical composition full of wit and creativity, inspired by the everyday experience of hearing a phone ringtone and people's instinctive reactions to it. The work seamlessly integrates the familiar iPhone ringtone melody into its musical structure, using imitation, transformation, and emotional progression to portray the curiosity, anticipation, anxiety, and unease it provokes—a series of modern emotional responses. Here, the ringtone is not merely a signal but acts as a "troublemaker." The moment it sounds, it triggers a cascade of emotions: anticipation, curiosity, anxiety, and even a tinge of panic—"Who's calling? Is it good news or bad?" The charm of this piece lies in how it conveys these emotions to the audience. For example, various sound combinations mimic the restlessness of waiting, the barely contained excitement, and the eventual sense of relief. In certain moments, the music abruptly pauses, as if mimicking the held breath of someone about to answer a call. These elements subtly ask the question: while we are so closely connected by screens, are we also, in some way, being silently isolated?