|First Indicator||Second Indicator|
|Display constant controller
# - No information provided
0 - Medium of performance
1 - Partial medium of performance
# - Undefined
The instrumental, vocal, and/or other medium of performance for which a musical work was originally conceived or for which a musical expression is written or performed. May be used to differentiate a musical work or expression from another with the same title.
Multiple mediums from the same source vocabulary may be recorded in the same field in separate occurrences of subfield $a (Medium of performance), $b (Soloist), $d (Doubling instrument), or $p (Alternative medium of performance). Multiple mediums from the same source vocabulary may also be recorded in separate occurrences of the field if each medium is controlled by an Authority record control number or standard number in subfield $0. Terms from different source vocabularies are recorded in separate occurrences of the field.
First Indicator - Display constant controller
The complete medium of performance of the musical work/expression.
Incomplete medium of performance of the musical work/expression. To be used when certain instruments or voices are prominent but the complete instrumentation is unknown to the cataloger.
[A sound recording of didjeridu music, in which the didjeridu is prominent, but other instruments are not identified.]
Second Indicator - Undefined
Undefined and contains a blank (#).
$a - Medium of performance
A term that indicates the instrumental, vocal, and/or other medium of performance.
|100||1#$aMahler, Gustav,$d1860-1911.$tSymphonies,$nno. 2,$rC minor|
[In this example there are different parts for performance purposes.]
|100||1#$aBeethoven, Ludwig van,$d1770-1827.$tSonatas,$mpiano,$nno. 14, op. 27, no. 2,$rC# minor|
|383||##$ano. 14,$bop. 27, no. 2|
$b - Soloist
Medium of performance term for a soloist (a featured instrument or voice accompanied by an ensemble).
[A work for flute accompanied by orchestra.]
$d - Doubling instrument
Medium of performance term for the instrument(s)/voice(s) a performer in a musical work/expression plays in addition to the primary instrument/voice. Multiple doubling instruments may be recorded in separate occurrences of subfield $d. They may also be recorded in separate occurrences of the field if each medium is controlled by an Authority record control number or standard number in subfield $0.
|382||0#$aflute$n1$dpiccolo$n1$dalto flute$n1$dbass flute$n1$s1
[A work for solo flute, doubling piccolo, doubling alto flute, and doubling bass flute.]
$n - Number of performers of the same medium
Number of performers of the medium named in the preceding subfield. Use after subfield $a (Medium of performance), $b (Soloist), $d (Doubling instrument), or $p (Alternative medium of performance). Subfield $n may be omitted if the number equals 1.
[A work for two trumpets and two trombones.]
$p - Alternative medium of performance
Medium of performance term for an alternative instrument, vocal, and/or other medium of performance, given as an alternative to its primary medium of performance in preceding subfield $a, $b, or $d.
|382||0#$pclarinet$valternative for violin$2gnd|
$s - Total number of performers
Total number of performers needed to perform in the musical work/expression.
|382||0#$asoprano$n2$amezzo-soprano$n1$atenor saxophone$n1$dbass clarinet$n1$atrumpet$n1$apiano$n1$aviolin$n1$dviola$n1$adouble bass$n1$s8
[A work for 2 sopranos, one mezzo-soprano, tenor saxophone (doubling bass clarinet), C trumpet, piano, violin (doubling viola), and double bass--8 total performers).]
$v - Note
Note for information that is not kept otherwise in the subfields of the field. May contain a description of the relationship between an alternative medium of performance and its primary medium of performance, or other textual information.
|382||##$adidjeridu$vdidjeridu is prominent, but other instruments are not identified$2gnd|
$0 - Authority record control number or standard number
$2 - Source of term
MARC code that identifies the source of the term in subfield $a when it is from a controlled list.
$6 - Linkage
$8 - Field link and sequence number
Prior to 2012 Indicator 1 was undefined