X62 Medium of Performance Terms - General Information

Field definition and scope:

Each medium of performance term field is unique in its definition and scope. For specific information, select from the list below.

162 Heading - Medium of Performance Term (NR)

462 See From Tracing - Medium of Performance Term (R)

762 Established Heading Linking Entry - Medium of Performance Term (R)

Record requirements: The National level record requirement for the medium of performance term fields is Mandatory if applicable, except for field 762 which is Optional. For the national level requirements by subfield, see the specific field.

Field repeatability: See the specific field for its repeatability.

Guidelines for applying content designators:

The content designators identify the elements occurring in medium of performance term headings constructed according to generally accepted thesaurus-building conventions (e.g., Library of Congress Medium of Performance Thesaurus). Medium of performance terms designate instruments, voices, ensembles, and other media that can be used to perform musical compositions.

The indicators, subfield codes, and input conventions for the medium of performance term fields 162, 462, 562, and 762 follow similar patterns. Guidelines for applying them are below. Subfields are grouped by type of entry.

For indicator and subfield code definitions and examples, National level (NLR) record requirements, and designator repeatability, see table below. An asterisk ( * ) in the column indicates that the requirement varies. See table in the specific field.:

Position	Description	NLR	Repeatability
Field X62	Medium of Performance Terms	*	*
Indicator:
First	Undefined; contains a blank	M

Second
162, 462, 562	Undefined; contains a blank	M

762	Thesaurus	M
0	Library of Congress Subject Headings/Name authority file	A
1	LC subject headings for children's literature	A
2	Medical Subject Headings/NLM name authority file	A
3	National Agricultural Library subject authority file	A
4	Source not specified	A
5	Canadian Subject Headings/LAC name authority file	A
6	Répertoire de vedettes-matière	A
7	Source specified in subfield $2	A

Subfield code:
	Main term portion
$a	Medium of performance term	M	NR

	Tracing and linking subfields
$i	Relationship information [462, 562, 762]	A	R
$w	Control subfield [462, 562, 762]	A	NR
$0	Authority record control number or standard number [562, 762]	A	R
$1	Real World Object URI [562, 762]		R
$2	Source of heading or term [762]	A	NR
$4	Relationship [462, 562, 762]	O	R
$5	Institution to which field applies [462, 562, 762]	A	R
$6	Linkage	A	NR
$8	Field link and sequence number	O	R

Input conventions:

Punctuation

Spacing

Content designator history:

Field X62 - Medium of Performance Terms - General Information [new, 2013]

Subfield $i - Relationship information [762] [new, 2014]

Subfield $1 - Real World Object URI [562, 762] [new, 2017]

Subfield $4 - Relationship code [762] [new, 2014]

Subfield $4 - Relationship code [462, 562, 762] [renamed, 2017] [redescribed, 2017]: Subfield $4 was renamed to Relationship and redescribed to allow for the recording of relationship URIs in addition to MARC and non-MARC codes.