A bar of rhythm is correct when the note values add up to what the time signature asks. Count the beats, write the total, and compare it with the top number.
This lesson is part of the SPM subjects and learning resources section. The rhythms here are original, and they are written in words so they work without a notation screen.
How do I check a bar?
- Read the time signature. In 4/4 each bar needs 4 crotchet beats.
- Write the beat value under each note.
- Add them up.
- Compare the total with the bar’s requirement.
Common values in 4/4 are a semibreve (4), a minim (2), a crotchet (1) and a quaver (½). A dot adds half the note’s value, so a dotted crotchet is 1 + ½ = 1½ beats.
Worked example: an original bar
Bar 1 in 4/4 reads: crotchet, quaver, quaver, minim.
| Note | Beats |
|---|---|
| Crotchet | 1 |
| Quaver | ½ |
| Quaver | ½ |
| Minim | 2 |
| Total | 4 |
The total is 4, so the bar is correct. Clap it while counting “1, 2-and, 3, 4” with the minim held across beats 3 and 4.
Bar 2. Dotted crotchet, quaver, minim: 1½ + ½ + 2 = 4, so this bar is also complete.
The mistake that costs marks
The common slip is to treat a dotted crotchet as one beat, which leaves the bar half a beat short, or to forget the dot and overfill.
| Bar (4/4) | Wrong count | Correct count |
|---|---|---|
| Dotted crotchet, quaver, minim | 1 + ½ + 2 = 3½ (short) | 1½ + ½ + 2 = 4 |
| Crotchet, crotchet, minim, quaver | 1 + 1 + 2 + ½ = 4½ (over) | Needs one fewer half beat |
Fixing an incomplete bar
If a bar is half a beat short, add a quaver or a quaver rest. If it is over, change a long note to a shorter one. Then recount.
Check yourself
A 3/4 bar contains a minim and a crotchet rest. Is it complete? Then a second 3/4 bar contains a crotchet and a minim; state what you would add or remove, if anything.
Answer
3/4 needs 3 beats. Bar 1: minim 2 + crotchet rest 1 = 3, so it is complete.
Bar 2: crotchet 1 + minim 2 = 3, so it is also complete and nothing needs changing.
If it had held a crotchet and a dotted minim, the total would have been 1 + 3 = 4, one beat too many.
What to study next
Good rhythm practice needs a routine, so continue with build a focused rehearsal log. Then try the Music original practice set.
The structured answer self-review can check whether each bar shows its beat total. A teacher can work through your own bars in online one-to-one Music tuition.