What "musical composition"  means?

"...A piece of music exists in the form of a written composition in musical notation or as a single acoustic event (a live performance or recorded track). If composed before being performed, music can be performed from memory, through written musical notation or through a combination of both. Compositions comprise musical elements, which vary widely from person to person and between cultures. Improvisation is the act of composing during the performance, assembling musical elements spontaneously..."

Or we can say this:  "....Through music we learn to express our emotions creatively and constructively...."

I am Guilherme Schroeter, composer, pianist, singer, arranger, desktop musician. I am 47 years old right now. I was born from a traditional family of musicians: Aunt opera singer, father violinist, brother violinist, mother pianist. I remember my father playing with my mother Brahms violin and piano sonatas, My piano teacher and opera couch Larry Fountain, a great musician - that studied in Manhattan school of music. I have been classical pianist for more than 30 years (doing recitals with my brother virtuose violinist Harry Schroeter for years too, travelling over Brazil, doing competitions and giving recitals since 15 years old).  Recently I stop do recitals, and after retired from stage and started dedicated myself to compose 

Studio

Actual photo at home

Children on the 60's

Hollywood Music awards 2008