Icon
And XCF file if you want to make changes:
https://mega.nz/#!4YsXFJCL!MGb_Hg9FYzR7yxgZOoZ-wyEE8JxaLilDGcPVnTK6OSM (square) https://mega.nz/#!xcNgiazA!6jYsRu0VDSJo1amUuE5-alJTn_18eFNcwswlMGWJUAQ (circle) (just select download through browser, no need to sign up)
I used the headphone icon (in the form of a generated font) from https://github.com/Keyamoon/IcoMoon-Free
Same as above, with added text in the Wisdom Script font by James T Edmondson which is used under the personal use / non-profit clause. If I decide to turn Stretto into a business I'll purchase the license or switch to a different font.
Once again, XCF file if you would like to make changes:
https://mega.nz/#!8JVgCJTb!HG8KeBT0DlxN0x6Z41j5hiV3P2VL10n2dUo-mpgEb7k