Tempo is the speed or pace of a given piece or subsection thereof, how fast or slow. Tempo is related to meter and is usually measured by beats per minute, with the beats being a division of the measures, though tempo is often indicated by terms which have acquired standard ranges of beats per minute or assumed by convention without indication. Tempo may be separated fromarticulation, or articulation may be indicated along with tempo, and tempo contributes to the overall texture. While the ability to hold a steady tempo is a desirable skill, tempo is changeable, and often indicated by a conductor ordrummer. While practicing, an electronic or mechanical device, ametronome, may indicate the tempo, as one usually works one's way up to being able to perform at the proper tempo.