Url
	https://omeka-s.grinnell.edu/s/MusicalInstruments/item/1240
Resource class
	wmi:MusicalInstrument
Title
	surdo
Subject
	211.212.11
Publisher
	Contemporanea
Contributor
	Roger Vetter
Type
	Afro-Brazilian
Format
	25.3 in. height (first instrument)
20 in. diameter of shell (first instrument)
22.7 in. height (second instrument)
18 in. diameter of shell (second instrument)

Identifier
	3268 
	3237
Source
	South America
Language
	EN
Coverage
	Brazil
Extent
	88A
	86A
Medium
	wood - laminated
	metal - sheet
	membrane - synthetic
	metal
Requires
	1
Is Part Of
	Samba Ensemble for Carnival from Brazil
	Grinnell College Music Instrument Collection
Spatial Coverage
	Americas
Number of drums comprising instrument for membranophone
	single drum
Shell design for membranophone
	tubular - cylindrical
Number and function of membranes for membranophone
	two, one for sounding and one for resonance
Membrane design for membranophone
	framed with rigid flesh hoop
Membrane attachment for membranophone
	counterhoop, lapped over framed membrane hoop, connected by lacing or tension rods to counterhoop lapped over framed membrane hoop
Membrane tension control for membranophone
	rotating screw rods or bolts
Sounding for membranophone
	striking with one hand and one handheld beater
Sound modifiers for membranophone
	none
Category of Instrument
	membranophone

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