The best song will be announced in the review.
Here is the best 1 line Mathematica composition among the submissions. The author Daniel Koll writes:
"it is interesting that logarithms and exponentials give these nice cheap sci-fi sounds":
Manipulate[Sound[{Play[Sin[A Log[t]],{t,0,0.5}],Play[Sin[B*Exp[t]],{t,0,0.5}]}],{A,100,500},{B,1000,5000}]