← Back to Glisso
Glisso for Schools
Information for IT administrators, band directors and teachers
Glisso (glisso.net) is a free music-education practice tool for school band students. It teaches brass instrument fingerings, scales, key signatures and sight-reading, and is used for practice at home and in the band room. If your filter is blocking it, the two sections you want are Domains to allow and Filtering category. Students and teachers: there is a ready-made unblock request further down that you can send to your technology department.
What Glisso is
Learning a brass instrument requires memorising a great deal of material away from the instrument: which valve combination sounds which note, the fingering pattern of every major and minor scale, key signatures, transposition, and how to read notation at tempo. That work normally needs an instrument, a quiet room and a music stand.
Glisso replaces the instrument with the computer keyboard or a phone screen, so the same drilling can happen silently in a study hall, on the bus to a competition, or at home late at night. It supports trumpet, french horn, mellophone, trombone, baritone, euphonium and tuba, each with its own correct transposition and fingering chart.
What students do here
- Fingering flashcards. A note appears on the staff; the student plays the correct valve combination.
- Scale practice. Major, minor and chromatic scales in every key, with correct fingerings and a metronome.
- Sight-reading. Freshly generated exercises to read at tempo.
- Music mode. Play along with real sheet music, including a student's own MusicXML files from their band literature.
Filtering category
Glisso is correctly categorised as Education. Depending on your filter's taxonomy, the appropriate categories are:
Education Educational Institutions Educational Technology Reference Arts / Music (education)
Glisso is not a gaming site, social network, streaming service, chat platform, or proxy/anonymiser. It carries no advertising and no third-party advertising trackers.
Because Glisso keeps score and has practice leaderboards - the same way a typing tutor or a maths-fluency drill does - automated classifiers sometimes miscategorise the domain as Games. The domain is also young, so some filters still have it as Uncategorized, which many districts block by default. If your filter shows either, we would be grateful if you submitted a correction. The lookup and recategorisation tools for the major vendors are:
- Lightspeed Systems - Domain Lookup (submit for review; including a reason moves it up the queue)
- Securly - Category Lookup tool (admin console: "Request category change")
- GoGuardian Admin (Policies → Categories → Check URL → "Share Category Feedback")
- Fortinet FortiGuard - Web Filter rating submission
- Palo Alto Networks - Test A Site ("Request Change")
- Zscaler - Site Review
- Symantec / Broadcom (Blue Coat) - Site Review
- Cisco Talos - Reputation Center
- Trend Micro - Site Safety Center
- Trellix / McAfee - Customer URL Ticketing
- Webroot BrightCloud - URL/IP Lookup
Domains to allow
Glisso is a static web app plus Google Firebase for accounts and saved progress. Allowing the first entry alone is enough to load and practise; the rest are needed for sign-in, saved progress and the web font.
| Domain | Needed for | Required? |
|---|---|---|
glisso.net | The app itself (HTML, JS, audio, artwork) | Yes |
*.googleapis.com | Covers the four Firebase hosts below in one rule | Simplest option |
identitytoolkit.googleapis.com | Sign-in (Firebase Authentication) | For accounts |
securetoken.googleapis.com | Keeping a session signed in | For accounts |
firestore.googleapis.com | Saved progress, scores, class rosters | For accounts |
firebaseinstallations.googleapis.com | Firebase SDK initialisation | For accounts |
us-central1-glisso.cloudfunctions.net | Server-side score submission, friends, class seats | For accounts |
accounts.google.com, apis.google.com | "Continue with Google" sign-in only | Optional |
js.stripe.com, checkout.stripe.com, api.stripe.com | Optional paid subscription checkout | Not needed for students |
Everything is served over HTTPS on port 443. There are no WebSocket, UDP or non-standard-port requirements, and nothing to install: Glisso runs in the browser, including on managed Chromebooks and iPads.
Student safety and privacy
Full detail is in our Privacy Policy; the points that usually matter to a district review are:
- No advertising. Glisso shows no ads and carries no third-party advertising or profiling trackers.
- No open chat. There is no messaging, no comments, no forum, and no way for one user to send another free text.
- No shared user media. Sheet music a student imports stays private to their own account; there is no browsing or sharing feature for it, and directors cannot see what their students import.
- Pseudonymous by default. New accounts are given a neutral display name such as "Player-1234" - never the student's real name or email address. A student can change it, and any chosen name is public on leaderboards.
- Usable without an account. The practice modes work signed-out; an account adds saved progress across devices.
- Payments are never handled by us. The optional subscription is processed entirely by Stripe; we never see or store card numbers.
- Account deletion. A student can delete their account and its data from inside the app.
- No promotional email. We send only account-related messages such as email verification, password resets and billing notices.
If your district needs a signed student-data-privacy agreement, a DPA, or answers to a vendor questionnaire before Glisso can be approved, email [email protected] and we will complete it.
If Glisso is blocked at your school
Please don't try to get around your school's filter - that generally breaks the acceptable-use policy you signed, and a site reached through a proxy gets blocked again the moment it is noticed. The request below is the route that actually sticks, because it puts the domain on the district's allowlist permanently.
Copy this, fill in the bracketed parts, and send it to your school's technology or IT department. A band director asking on your behalf carries considerably more weight than a student asking alone, so it is worth showing this to your director first.
Subject: Website unblock request - glisso.net (music education) Hello, Could you please allow glisso.net on the school network? It is a free music-education practice tool that we use for band. It drills brass instrument fingerings, scales, key signatures and sight-reading, so students can practise those away from their instrument. I use it for [band class / private practice / marching band]. Details for the filter: - Site: https://glisso.net - Correct category: Education / Educational Technology - It is not a game site, social network, streaming service or chat platform. - No advertising, no third-party ad trackers, no open chat between users. - HTTPS only, port 443. Nothing to install, works on managed Chromebooks. The publisher has put the technical details - the exact domains to allow, the student-privacy summary, and links to the recategorisation tools for the major filter vendors - on one page here: https://glisso.net/for-schools If it is currently categorised as "Games" or "Uncategorized" in our filter, that page explains how to submit a correction to the vendor. Thank you, [your name, and your band class or ensemble]
If your technology department needs anything further from us - a compliance questionnaire, a DPA, or written confirmation of any of the above - they are welcome to contact us directly at [email protected] and we will respond.