This is a two-man band with a guitarist and drummer, who play and record by the Schuylkill river bank in the heart of Philadelphia, below the arch of the bridges. Their sound is echoed and it makes a beautiful amphitheatre-like effect. From a distance it almost sounds like a full-fledged concert performance. In fact I heard the sound of their music from almost a mile away and kept following it along the river, and I was so surprised to finally discover the source of the music!