Shawm
Smith’s Bible Dictionary · William Smith, F. N. Peloubet, M. A. Peloubet
In the Prayer-book version of (Psalms 98:6) "with trumpets also stands also and shawms " is the rendering of what stands in the Authorized Version "with trumpets and sound of cornet ." The Hebrew word translated cornet is treated under the head. The "shawm" was a musical instrument resembling the clarinet.
Source of the article
William Smith; revised by F. N. Peloubet and M. A. Peloubet; CrossWire SWORD module Smith 1.3
Bible Strong digital edition from CrossWire module 1.3, based on the 1884 Peloubet revision with later digital enrichments preserved