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384  Key (R)

Record Type


Input Standards

Field (Full/Minimal)
Required if applicable/Optional
1st Indicator  Key type
blank character Relationship to original unknown
0 Original key
1 Transposed key
2 Key of representative expression
2nd Indicator  Undefined
blank character Undefined
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards (Full/Minimal)
ǂa Key (NR) Mandatory/Mandatory
ǂ0 Authority record control number or standard number (R) Optional/Optional
ǂ1 Real World Object URI (R) Optional/Optional
ǂ3 Materials specified (NR) Optional/Optional
ǂ6 Linkage (NR) System supplied/System supplied
ǂ7 Data provenance (R) Optional/Optional  
ǂ8 Field link and sequence number (R) Optional/Optional


The set of pitch relationships that establishes a single pitch class as a tonal center for a musical work or expression. May be used to differentiate a musical work from another with the same title.

For information on punctuation, see the Punctuation section below.

1st Indicator

Key type.

blank character

Relationship to original unknown. The relationship of the specified key to the original key in which the musical composition was written.


Original key.


Transposed key. A different key from that of the original work.


Key of representative expression. Key for performance of musical content of a representative expression of a work.

2nd Indicator

Undefined. The 2nd indicator position is undefined and contains a blank.

blank character



ǂa Key

The pitch name and the mode (e.g., major or minor).

100 1   Godowsky, Leopold, ǂd 1870-1938, ǂe composer
240 1 0 Etude macabre
382     piano
384     D minor
100 1   Hoffmeister, Franz Anton, ǂd 1754-1812, ǂe composer
240 1 0 Concertos, ǂm double bass, orchestra, ǂn no. 1, ǂr E♭ major
384 1   D major
500     Transposed to D major to be more suitable for the modern double bass
ǂ0 Authority record control number or standard number

For information about subfield ǂ0, see Control Subfields.

ǂ1 Real World Object URI

For information about subfield ǂ1, see Control Subfields.

ǂ3 Materials specified

For information about subfield ǂ3, see Control Subfields.

ǂ6 Linkage

Data that link fields when non-Latin script is entered. This subfield is system supplied and does not appear in OCLC online displays. Do not manually add subfield ǂ6. For more information about subfield ǂ6, see Control Subfields.

ǂ7 Data provenance

For information about subfield ǂ7, see the Data Provenance Subfields section of Control Subfields.

ǂ8 Field link and sequence number

For information about subfield ǂ8, see Control Subfields.


For records containing or omitting punctuation, follow these instructions:

  • Include incidental punctuation needed within any subfields, e.g., commas, periods (following abbreviations or initials), etc.
  • Omit punctuation preceding each subfield unless the preceding subfield ends with an ellipsis, exclamation point, hyphen, period (following an abbreviation or initial), question mark, closing bracket, or closing parenthesis
  • Omit the terminal period at the end of the field unless the last word is an abbreviation or initial
384 0   ǂ3 Scriabin sonata no. 3 ǂa F♯ minor

For more information on punctuation, including OCLC policy, see section 2.8, Punctuation.


For indexing and searching information, see Searching WorldCat Indexes, field 384.


For more information, including content designator history, see MARC 21 Format for Bibliographic Data, field 384.

This page last revised: October 6, 2022