This is a project I made for DR P2, the classical radio station. I wanted to bring foreigners together to play a classical piece; in this case it was Mozart's 41st symphony performed by Danmarks Radio Orchestra.
The piece was recorded and separated into four sections, so each group of smart phones had a section, whether it was percussion, strings, woodwinds or brass. Using only their smart-phones and two coffee cups as speakers, they were able to 'perform' the piece.
I designed a font based on musical notation to represent the name of the orchestra on the back of the t-shirt.