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Music
Flat
Linear Musical Icons
Musical Sign, G Clef, music
Black
512x512
Computer And Media 1
musical, symbols, symbol
Music And Sound 1
music, music note, Musical Sign
music, clef, Music Symbol
Music And Sound 2
clef, treble, music
PNG ICO ICNS MORE
iOS 7 icons
treble, clef
Free icons for Windows8/Metro
World of Aqua 2
clef, treble
128x128
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UI
Outline
Integral
clef, Key, music
Glyph
Windows 8 metro style
Gaming & gambling
3D
Free Game Icons
secure, Authentication, password
64x64
Network & communications
Pixel
16x16 Free Application Icons
secure, Log in, pass
16x16
Key, Log in, login
Lock, security, pwd
Touch gestures
Open Source Gesture Library
Gestureworks, clef, stroke
PNG MORE
Desktop apps
Free Applications Icons
Lock, clef, private
24x24
Log in, private, password
Key, private, login