Texas Subcategories This category has only the following subcategory. M Melodeon (2 P) Pages in category "Diatonic instruments" The following 6 pages are in this category, out of 6 total. This list may not reflect recent changes. A Appalachian dulcimer Arpa jarochaD Diatonic harmonicaP Paraguayan harpR Richter-tuned harmonicaT Tremolo harmonica