Code 127 - Coded Data Field: Duration of sound recordings and printed music (NR)
Indicators: blank
Subfield codes $a Duration (Repeatable.)
This subfield contains a six-character numeric string representing the duration of a sound recording, or of a section of a sound recording, or of the estimated duration of a performance of printed music. The time is divided into three sub-elements, each two characters long, representing the number of hours, minutes, and seconds. Each sub-element is right justified; unused positions contain blanks or zeros.