Recent climate modelling by Timbal et al. Usually it is played with the timbal, a percussion instrument similar to a drum. Other groups may incorporate additional instruments, such as timbal, atabaque, and tamborim. The timbal is available in different lengths; a greater length produces a deeper bass. In Brazil, the term "timbal" refers to an unrelated drum. In the 1980s, a musical/social movement was organized to bring the timbal to popular music. The timbal is designed to play loud, rapid phrases and solos with powerful slaps. The tymbal (or timbal) is the corrugated exoskeletal structure used to produce sounds in insects.