# Studies and exercises (Left hand) { "id": "S2003007723", "title": "Studies and exercises (Left hand)", "url": "/topics/S2003007723", "kind": "topic-directory", "aeo_cohort": "topic-directory", "provider": "lcsh", "revision": "7eddb55dfa18d2fa", "catalogue_revision": "f050b5d4780b1289", "numeric_address": "13871311180158607942", "address_version": "morton4x16-v1", "coordinates": [ 0, 477, 36323, 44032 ], "answer_status": "Directory metadata; local answer requires separate source review", "truth_status": "Subject descriptor, not a factual answer or a demonstrated knowledge gap" } Use as a form subdivision under individual musical instruments and families of instruments. Directory metadata is not a factual answer or evidence of a global knowledge gap. Source: https://id.loc.gov/authorities/subjects/sh2003007723 No owner-reviewed local answer yet.