Third-Party Licenses — Blue Hour Audio Software

The Blue Hour Audio plug-ins (Blue Melody, Blue Drummer, and Blue Slice) are closed-source commercial products. They incorporate the following third-party components under their respective licenses. This file (or an equivalent "Acknowledgements" screen) ships with the product and is published at https://bluehouraudio.us.

JUCE 8 (v8.0.8)

Used under the JUCE 8 Starter commercial license (elected in the Blue Hour Audio JUCE account). Free up to US$20,000/yr revenue; closed-source permitted; no splash screen. See https://juce.com/legal/juce-8-licence/.

Steinberg VST 3 SDK — Steinberg VST 3 SDK License

The Steinberg VST 3 SDK bundled with this build (via JUCE 8.0.8) is dual-licensed by Steinberg under either the proprietary Steinberg VST 3 SDK License or the GNU General Public License v3. Because Blue Hour Audio software is closed-source commercial software, it is built under the proprietary Steinberg VST 3 SDK License option (not the GPLv3 option). The full license text ships inside the VST 3 SDK (LICENSE.txt) and is available from Steinberg. VST is a trademark of Steinberg Media Technologies GmbH, registered in Europe and other countries.

Note: Steinberg released the VST 3 SDK under the MIT License in October 2025. A future build that pins a JUCE version bundling the MIT-licensed SDK may instead attribute this component under the MIT License.

Microsoft Edge WebView2

The WebView2 runtime is a Microsoft component installed on the end user's machine (not statically shipped inside the plug-in). The installer may distribute Microsoft's Evergreen Bootstrapper under Microsoft's WebView2 distribution terms. See https://developer.microsoft.com/microsoft-edge/webview2/.

Roboto Mono — SIL Open Font License 1.1

The interface embeds three weights of Roboto Mono (Regular 400, Medium 500, Bold 700) as subsetted, base64-encoded WOFF2 web fonts inside ui/index.html, so the font is redistributed with the Software. Roboto Mono is published by its authors under the SIL Open Font License, Version 1.1, whose full text is reproduced at the end of this file as that licence requires. It declares no Reserved Font Name, so the subsetted files may keep the Roboto Mono name.

Roboto Mono is the ONLY font redistributed with the Software, and it is the only font the interface uses: the interface font stack is 'Roboto Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace, where every fallback after Roboto Mono is an operating-system font that is not redistributed.

Note on licence history: Roboto Mono was formerly distributed under the Apache License 2.0 and is now distributed by Google Fonts and by its authors under the SIL Open Font License 1.1 (google/fonts lists it under ofl/robotomono; no Apache-licensed copy remains upstream). If the embedded WOFF2 subsets were generated from an older Apache-era release, those files are also available under the Apache License 2.0. Regenerating the subsets from current upstream removes the ambiguity and makes this notice exactly correct.

Full licence text — SIL Open Font License 1.1 (Roboto Mono)

This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
https://openfontlicense.org

-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.

The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded,
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply
to any document created using the fonts or their derivatives.

DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.

"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).

"Original Version" refers to the collection of Font Software components as
distributed by the Copyright Holder(s).

"Modified Version" refers to any derivative made by adding to, deleting,
or substituting -- in part or in whole -- any of the components of the
Original Version, by changing formats or by porting the Font Software to a
new environment.

"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.

PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
a copy of the Font Software, to use, study, copy, merge, embed, modify,
redistribute, and sell modified and unmodified copies of the Font
Software, subject to the following conditions:

1) Neither the Font Software nor any of its individual components,
in Original or Modified Versions, may be sold by itself.

2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
included either as stand-alone text files, human-readable headers or
in the appropriate machine-readable metadata fields within text or
binary files as long as those fields can be easily viewed by the user.

3) No Modified Version of the Font Software may use the Reserved Font
Name(s) unless explicit written permission is granted by the corresponding
Copyright Holder. This restriction only applies to the primary font name as
presented to the users.

4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
Software shall not be used to promote, endorse or advertise any
Modified Version, except to acknowledge the contribution(s) of the
Copyright Holder(s) and the Author(s) or with their explicit written
permission.

5) The Font Software, modified or unmodified, in part or in whole,
must be distributed entirely under this license, and must not be
distributed under any other license. The requirement for fonts to
remain under this license does not apply to any document created
using the Font Software.

TERMINATION
This license becomes null and void if any of the above conditions are
not met.

DISCLAIMER
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
OTHER DEALINGS IN THE FONT SOFTWARE.