To me the work Dappled Fields by Sydney Wallace Stegall looks like it is written for percussion ensemble using a gong, a bass drum, a thunder sheet, wind chimes and sandpaper blocks. I chose percussion instruments because all of the symbols are very jagged looking and I associate these shapes more with percussion that I do with any other instrument. I chose the specific instrument for the different symbols based on what I thought the symbol would sound like. The gong is the jagged explosion-looking symbol. The base drum is any circle, square or triangle, with different mallets used for the different shapes. The thunder sheet is used for the squiggly lines. The solid diagonal lines are represented by the wind chimes, and the scribble looking scrunched up line is represented by sand paper blocks.
For the gong, the bigger the symbol the harder the gong is hit. The thunder sheets volume is determined by how long the squiggly line is. The longer the squiggle the louder the instrument should be played. The chimes volume should be determined by the thickness of the line, and the duration is determined by the length and steepness of the line. For the bass drum, if the shape is filled in the instrument is to be hit with the traditional part of the mallet. The square should be hit with a wood beater, the triangle with a hard felt beater, and the circle with a soft felt beater. The bigger the shape, the louder the instrument should be played. If the shape is not filled in, the bass drum should be hit with the handle of the mallet on the rim of the drum. The sand blocks volume is determined by the heights of the lines, and the duration is determined by the length. All durations and lengths should be relative and determined by the performers.