Short answer
Tempo tells you how quickly the musical beat moves; meter tells you how beats are grouped and normally subdivided. A faster pulse does not, by itself, mean a different meter: speed and grouping answer different questions about musical time. 1
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At a glance
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| Question | Tempo | Meter |
|---|---|---|
| What does it describe? | Speed of the beat | Organization of beats |
| What information expresses it? | BPM or terms such as Andante | Beats per measure and beat division |
| What distinction matters? | Faster versus slower pulse | Duple, triple, or quadruple; simple or compound |
These categories follow the supplied music-theory definitions. 1
What each thing is
Tempo treats the beat as a pulse whose rate can be described. Meter treats beats as members of a recurring pattern. Puget Sound emphasizes the number of beats per measure and their subdivision; UCSB emphasizes accented and unaccented beats. Those descriptions highlight different aspects of the same organizing framework. 1 2
Key differences
Tempo supplies rate information, while meter supplies structural information. Within meter, two distinctions matter: how many beats form a measure, and whether each beat normally divides into two or three parts. Thus, “simple triple” combines a subdivision category with a three-beat grouping; it does not specify a tempo. 1
How to tell them apart
Ask whether the information describes how fast the pulse proceeds or how its beats form groups. A BPM indication answers the first question; a description such as “compound duple” answers the second. The limit is identifying the beat correctly: in compound meter, a time signature’s bottom number represents the beat’s subdivision, not the whole beat. 1
Where they overlap
Both concepts depend on the beat, so they describe different dimensions of the same musical framework. Rhythm is related but distinct: UCSB describes it as varying note durations placed over a metrically organized beat pattern. Counting every sounding note therefore is not necessarily the same as counting the underlying beats. 2
Edge cases
The notation 6/8 is a useful trap. In the supplied textbook’s classification, it is compound duple: two beats per measure, each normally divided into three parts. Reading the upper number as six full beats would misidentify that framework. This example concerns the textbook’s stated classification, not every possible performance interpretation. 1
Why the distinction exists
Separating rate from organization lets musical descriptions convey two kinds of information without conflating them. Saying that a passage has a three-beat pattern identifies its meter but leaves its speed unspecified; saying that its pulse is fast identifies tempo but leaves its grouping unspecified. 1 2
Common misconceptions
Meter is not merely another word for tempo, and it is not exhausted by counting notes. Nor does “compound” mean faster: it identifies three-part beat division. The sources also differ in emphasis—accent pattern versus measure structure—without establishing a dispute between those definitions. 1 2
Examples
Two hypothetical cases apply the distinction. First, a simple triple passage played at 60 BPM and then 120 BPM changes tempo while retaining its three-beat grouping. Second, passages in 2/8 and 6/8 can both be duple, yet differ in subdivision: the textbook classifies the former as simple and the latter as compound. 1