He began composing and performing professionally at age 20, when Integrity Music signed him as part of rock/pop band Vertical. With Vertical he toured around the world for 4 years.
He quickly moved from playing pop and rock to jazz, gospel and R&B music.
He also was part of the production team for drummer/producer Grammy Award nominee (2006) Alvaro Lopez, and at the same time was the bass player of Alvaro Lopez & Resq Band.
He currently travels around many cities in the US and Latin America giving clnics and seminars about playing, composing and producing.
He subsequently has turned his attention to producing as well as playing bass. Leslie has produced various other albums for many artists, and has had the opportunity to explore many different styles on many records he has been part of as composer, musician and producer.