Unresolved question about software design ...

Im from Berklee College of Music, Boston and
Atlantic International University, Honolulu.

Im Marine Biologist and Electroacoustic Music Composition student, my
aim is to make a software in Cmmon Lisp in which I can make algorithmic
music with a seed of a virtual ecosistem modeled by computer.

Im in the first steps of Common Lisp lenguage understanding, but I have
a stone base question:

Do I need another kind of tool more than the Lisp lenguage to build a
software or only to master the proramming lenguage is enough for that?


Thanks in advance!

??
Berklee College of Music, Boston.
AIU, Honolulu.