Music

Merry \; Christmas

with \;  GeoGebra

Music

b = 18 (slider from 0 to 30, step 1)
a = 6.72 (slider from -2 to 14.5, step 0.01)
B = (-1.5097786378088218, 3.994594693549547)
C = (11.869958686013534, 3.994594693549547)
aa = Mod(b, 2)
D = (10.060218008804982, -0.5195446849662376)
T = (14.098219028546477, -0.5936364467963567)
c = 4.88 (slider from 4 to 5, step 0.01)
E = (2.6263445718496947, -0.30961802644756675)
d = 4.6 (slider from 0 to 6, step 0.1)
mm = Mod(d * 10, 6)
F = (-1.473399582750234, 3.9383096518125966)
G = (15.123155067196459, 3.8642178899824775)
H = (13.888292370027807, 2.9627681210493613)
I = (14.888531154734416, 2.9133736131626153)
liste2 = Sequence((Random[-10, 160] * 0.1 + 0 * c, 6 - i * c), i, 0, 20, 0.025)
A: (a, If[a < 4, 3.85, 3.3 + a / 7])