When to bind two scores together

Music Cataloging at YaleBindery procedures

When music for two or more instruments is issued as two scores and the scores are not issued together (e.g., the 300 field says "1 score") follow these instructions:

M1011, M1111:
When we get two 2-piano scores, they should never be bound together.
When we a solo piano part and one 2-piano score, they should be bound together.

Other class numbers:
When music for two or more instruments is issued in scores published singly, and we purchase enough for performance, bind all together. For example, when we buy two copies of a score for two violins, the 300 field will say "1 score."  Assign only one barcode, even though we have two copies.

Indicate that the two scores are bound together:

Bibliographic record: Holdings:
Add a 590 field:
590 __ MUS: Copy 1-2 bound together.
OR
590 __ MUS: Copy 1-2 in 1 binding.
Add a universal message in ‡z the 852 field:
852 00 ... ‡z 2 copies in 1 binding

In the past, there have been several ways of noting this:

Piano concertos
Orbis #3127413
Bibliographic record: Holdings:
590 __ Copy 1-2 in one binding. 852 00 ‡b mus ‡t 1 ‡h M1011 ‡i B415 op.15 H5+ ‡m Oversize
   In the item record:
   Enum: c.1-2
852 00 ‡b mus ‡t 2 ‡h M1011 ‡i B415 op.15 H5+ ‡m Oversize
   No item record or barcode
Orbis #666226
Bibliographic record: Holdings:
590 __ MUS : Copy 1-2 in 1 binding. Two item records; two barcodes:
852 00 ‡b mus ‡t 1 ‡h M1011 B415 op.37 ‡i A+ ‡m Oversize
852 00 ‡b mus ‡t 2 ‡h M1011 B415 op.37 ‡i A+ ‡m Oversize
Orbis #666255
Bibliographic record: Holdings:
590 __ MUS : Copy 1-2 in 1 binding. One item record for c. 1; one barcode:
852 00 ‡b mus ‡t 1 ‡h M1011 B415 op.37 ‡i A+ ‡m Oversize
852 00 ‡b mus ‡t 2 ‡h M1011 B415 op.37 ‡i A+ ‡m Oversize
Orbis #666259
Bibliographic record: Holdings:
590 __ MUS : Library's copies: 2 scores each. Three item records; three barcodes:
852 00 ‡b mus ‡t 1 ‡h M1011 B415 op.73 ‡i A+ ‡m Oversize
852 00 ‡b mus ‡t 2 ‡h M1011 B415 op.73 ‡i A+ ‡m Oversize
852 00 ‡b mus ‡t 3 ‡h M1011 B415 op.73 ‡i A+ ‡m Oversize
Orbis #666709
Bibliographic record: Holdings:
590 __ MUS : Copy 1-2 in 1 binding.

852 00 ‡b mus ‡t 1 ‡h M1011 M939 K.316a ‡i A+ ‡m Oversize ‡x 2 copies in 1
   In item record:
   Enum: c.1-2

Orbis #666713
Bibliographic record: Holdings:
590 __ MUS : Copy 1-2 in 1 binding. 852 00 ‡b mus ‡t 1 ‡h M1011 M939 K.449 ‡i S3+ ‡m Oversize ‡z 2 copies in 1 binding
   In item record:
   Enum: 2 copies
Violin duets
Orbis #3009868
Bibliographic record: Holdings:
300 __ 1 score (43 p.) ; ‡c 30 cm.
No 590 field
One item record; one barcode:
852 00 ‡b mus ‡t 1 ‡h M287 ‡i G951 op.2 B1+ ‡m Oversize ‡z copy 1-2 in 1 binding
   In item record:
   Enum: c.1-2
852 00 ‡b mus ‡t 2 ‡h M287 ‡i G951 op.2 B1+ ‡m Oversize
   No item record or barcode
Orbis #742306
Bibliographic record: Holdings:
300 __ score (2 v.) ; ‡c 31 cm. 852 00 ‡b mus ‡t 1 ‡h M287 L462 op.3 ‡i M9+ ‡m Oversize
852 00 ‡b mus ‡t 2 ‡h M287 L462 op.3 ‡i M9+ ‡m Oversize ‡x c.2-c.3 in one binding
Orbis #659257
Bibliographic record: Holdings:
590 __ MUS : Copy 2 bound in pocket. Two item records; two barcodes:
852 00 ‡b mus ‡t 1 ‡h M287 M181 ‡i S7+ ‡m Oversize
852 00 ‡b mus ‡t 2 ‡h M287 M181 ‡i S7+ ‡m Oversize
Orbis #673837
Bibliographic record: Holdings:
590 __ MUS : c.1-2 bound together. One item record; one barcode:
852 00 ‡b mus ‡t 1 ‡h M287 ‡i S626+ ‡m Oversize
852 00 ‡b mus ‡t 2 ‡h M287 ‡i S626+ ‡m Oversize