The February 9, 2016 release of the RDA Toolkit included a variety of revisions to MLA’s Best Practices and the supplements.  BP 1.7.5 now includes recommendations related to typographical devices used as separators (as in Colchester · Essex · England) and symbols that cannot be reproduced (such as the four symbols that form the title of Led Zeppelin’s otherwise untitled fourth album).  BP 2.3.1.7 now includes guidance applicable to scores bearing a stated voice range.  BP 2.3.2.8.1 now includes guidance for how to treat a phrase that introduces a medium of performance (as in “with an accompaniment for a violin”).  BP 2.4.1.1 now includes an example of an audio recording bearing a statement of responsibility for the performer and a separate statement of responsibility for the composers.  BP 2.8.4 now includes guidance on when to treat a trade name as a series title instead of a label name.  BP 2.15

The October 13, 2015 release of the RDA Toolkit included minimal revisions to MLA’s Best Practices. One revision affects 2.15.3 (Plate Number for Music). When a plate number on a score has an additional number (often after a dash) corresponding to the number of pages or plates, it is to be recorded as part of the plate number instead of ignored. The plate number may optionally also be recorded without this additional number. For example: 028 22 23009-11 $b Carl Fischer 028 20 23009 $b Carl Fischer Further revision was done to 7.13.3 (Form of Musical Notation). The August release included new guidance about MARC encoding for multiple designations of form of musical notation as well as new examples. The October release adds new guidance covering details of form of musical notation as well as new examples. There is now sufficient guidance for cases such as chord symbols, chord diagrams, verbal

The August 11, 2015 update of the RDA Toolkit included some revisions to MLA’s Best Practices to bring it in line with revisions that were made to the RDA instructions in the April update. Some BPs have been deleted; some BPs have been relocated; some BPs have been renumbered and/or relabeled (see especially the 6.14.2 area); some BPs have been revised. A few additional revisions unrelated to the April update of the RDA instructions were also made to the BPs.  Highlights of the August 11 update include improved guidance and examples for 2.4.1.1 (Statement of Responsibility—Scope), 2.11 (Copyright Date), and 7.13.3 (Form of Musical Notation). The new guidance at 2.4.1.1 does broaden the scope a bit, and the new guidance at 2.11 restores historic practice for recording the latest phonogram copyright date that can be determined to apply to a resource as a whole.  Typos and various other errors were