limited range of the chanter, the harmonic possibilities are somewhat limited, but well-written harmony in a pipe band setting can be extremely effective. Pipe band harmony is sometimes referred to as 'seconds', although this simply refers to a second part and not to the interval of a second. In fact, intervals of a second are rarely found in pipe band harmony parts, except in passing. Instead, it is the consonant intervals which are stressed, such as perfect fourths and fifths, and even more commonly, parallel thirds and sixths. In contemporary arrangements, a merge between harmony and melody known as 'counter-melody' has been aired. A counter-melody is similar to a harmony part, but is distinguished because it has a melodic line of its own. Counter-melody can take a completely different thematic approach and can dramatically change the flow and atmosphere of the melodic unison. This technique is relatively new in the pipe band circuit, and in most cases require skill and timing to achieve in full unison. Drum corps The drum corps of a pipe band consists of a section of drummers playing highland snare drums and the bass section. In the early days of pipe bands, rope tension snare drums were common, but as bagpipe tuning pitches became higher, a brighter tone was demanded from the drum corps. Pipe band drummers now play on drums with very tight, knitted kevlar heads, designed for maximum tension to create a very crisp and strident sound. Since today's drum is so facile as a result of its design, players are often able to execute extremely complicated and technically demanding rudimentary patterns. The pipe band drum corps is responsible for both supporting the piping with a solid rhythmic foundation and sense of pulse, often creating an interesting contrapuntal line unto itself. The line played by the drum corps (referred to as the 'drum score') is usually based on rudimentary patterns and can often be quite involved, with solo, unison and contrapuntal passages throughout. A popular pattern in many scores is for the lead drummer to play a phrase, and the section to play in response. This technique is known as seconds (sometimes referred to as chips, or forte). While standard practice in pipe bands is for the pipe section to perform the traditional or standard arrangements of the melodies, including gracenotes, drum scores are very often composed by the lead drummer of the band.