When played in 3/8 meter, a bar has the length of three eighth notes.

The denominator 8 usually indicates a higher tempo as compared to a 3/4 meter. You can count along “1 2 3 1 2 3…” to get the overall feeling.

If the tempo is very fast, only the first beat is taken into account. In that instance, you don’t count 1 2 3 anymore but instead focus mentally on the 1 only.