Prague Spring is an international music festival and this project was part of a competition for years 2014 and 2015 which were 69th and 70th anniversary venue of this festival. Year 2014 was focused on the Czech classical music and 2015 focused on the 70th anniversary of the venue. I experimented with the traditions, both in music and instruments which were reflected in patterns as well as with hidden maths for 69 and 70. I have to admit that decoding requires a bit of understanding how music is written, but the hints should be quite clear. There are 2 quite different concepts. Especially, the traction of the conductor’s path while conducting seemed to potential.