Ad Locum
Definition. At the place — instruction to return to a specified point or to read at written pitch.
Detailed Explanation
Ad locum is Latin for ‘at the place’ or ‘to the location’. As a notation direction it has several related meanings: in some contexts, it instructs the performer to return to a specified point in the score (similar to dal segno); in other contexts, it cancels an octave-displacement marking (similar to loco).
The direction is rarer than its more common synonyms. Most scores use loco, segno, or other established markings rather than ad locum. When it does appear, the meaning is usually clear from context — return to the specified place, or to written pitch.
The Latin origin gives the marking a slightly archaic flavor. It is most commonly found in older editions or in works by composers with classical learning who reach for Latin terminology.
Etymology
Latin, ‘at the place’ — ad (‘at’) + locum (‘place’, accusative of locus).
In Practice
Read context to determine the intended meaning. If after an 8va passage, return to written pitch; if after a section, return to the indicated point.
Notable Examples
- Various older scores — Occasional usage (uncommon Latin marking)
Related Terms
Frequently Asked Questions
What does Ad Locum mean in music?
At the place — instruction to return to a specified point or to read at written pitch.
Where does the word Ad Locum come from?
Latin, ‘at the place’ — ad (‘at’) + locum (‘place’, accusative of locus).
How is Ad Locum performed in practice?
Read context to determine the intended meaning. If after an 8va passage, return to written pitch; if after a section, return to the indicated point.
What musical terms are related to Ad Locum?
Related terms include: Loco, Dal Segno, Segno.
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