One of the most difficult applications of the clave is in the realm of composition and arrangement of Cuban and Cuban-based dance music. Regardless of the instrumentation, the music for all of the instruments of the ensemble must be written with a very keen and conscious rhythmic relationship to the clave ... Any 'breaks' and/or 'stops' in the arrangements must also be 'in clave'. If these procedures are not properly taken into consideration, then the music is 'out of clave' which, if not done intentionally, is considered an error. When the rhythm and music are 'in clave,' a great natural 'swing' is produced, regardless of the tempo. All musicians who write and/or interpret Cuban-based music must be 'clave conscious,' not just the percussionists.