In the audio titled "The Bean," the central theme is the soothing and harmonious melody produced by an acoustic guitar. The audio begins with a slow, gentle strumming of the guitar strings, creating a calm and peaceful ambiance. As the composition progresses, it features a technique known as flageolet, a distinctive sound achieved by lightly touching the strings at certain points, producing high pitched, bell-like tones. The use of this technique adds a unique, ethereal quality to the music. At certain intervals, the tempo picks up, with more vigorous strumming, adding a lively and energetic dimension to the otherwise serene musical landscape. The symphony concludes with the calming, gentle strumming, similar to the beginning, drawing the listener into a full circle of a melodious acoustic guitar journey.