The present invention provides a trombone finger positioner, comprising a cylindrical structure, wherein said cylindrical structure having a pointer finger cut-out, a middle finger cut-out ,and a thumb cut-out; said cylindrical structure also incorporates a vertical cut and an opening along its full length; the pointer finger cut-out and middle finger cut-out have a major axis aligned along the Y-axis and the minor axis aligned along the X-axis, and the center of both the grooves are in the Y-axis; and said thumb cut-out is opposite to the middle finger cut-out and their centers are on the same axis.