Glissando is a glass-style audio player with a real-time animated visualizer. Add players anywhere with the Gutenberg block, the Elementor widget, or the [glissando] shortcode.

Features

Artwork and Compact player presets
Dark and light themes, six color palettes, custom colors
Solid visualizer bars with adjustable bar count
Visualizer tuning: animation speed, frequency range, low cut
Card styling: hover and glass tint colors, corner radius, shadows, background opacity
Download button (icon/text styles, second file, download counter)
Gutenberg block, Elementor widget and [glissando] shortcode
Scalable

Everything you can tweak

Every setting below has a control in the block sidebar, the Elementor widget and
the shortcode. Settings – Glissando holds the site-wide defaults that new
players start from, and any player can override them.

Audio and text

Track from the media library or any external URL
Title and artist, filled in automatically from the media metadata
Album artwork, square or 16:9, with zoom (1-2.5x) and vertical position

Layout

Artwork or Compact preset
Alignment: left, center or right in its column
Adapts to the column it sits in – scalable

Colors

Dark or light theme
Six visualizer palettes: aurora, sunset, fire, candy, ocean, mono
Multi-color gradients of your own
Glass tint color and button hover color

Visualizer

Bar count from 32 to 160
Animation speed, from real time to slow drift
Frequency range and low cut – trim the deep bass off the left edge

Card customization settings

Background opacity
Corner radius
Shadow size and strength

Downloads

Download button on or off
Icon, text or both, with your own label
A second downloadable file (e.g. instrumental) with its own label
Download counter per track

Accessibility

Keyboard-operable play, seek and volume, with visible focus rings
Respects the system “reduce motion” accessibility setting

A separately sold Pro version adds further player layouts (Standard, Minimal,
Radial), playlists, the LED and Dots bar styles and a share button.

Source code

None of this plugin’s own code is minified, compiled or obfuscated. Every PHP,
JavaScript and CSS file I wrote is the original human-readable source, and it
uses no third-party JavaScript libraries.

There is one generated value: the GLISSANDO_CSS string near the top of
assets/glissando.js. The player renders inside a Shadow DOM so that themes
cannot break it, and a Shadow DOM cannot see enqueued stylesheets, so the
stylesheet has to be injected as a string.

The readable source for that string is bundled with the plugin, uncompressed, at
assets/glissando.css. GLISSANDO_CSS is that same stylesheet encoded as a
JavaScript string literal – the rules, selectors, comments and formatting are
identical, so the two can be read side by side.

The build step is bundled too, as bake-css.js in the plugin folder. It needs
Node.js and nothing else: no npm install, no dependencies, no bundler. After
editing assets/glissando.css, run this from the plugin folder to regenerate
the string:

node bake-css.js<h3>External services</h3>

This plugin uses Freemius to handle licensing, plugin updates and optional
usage diagnostics.

No data is sent unless you opt in. Freemius is contacted when you accept its
opt-in prompt on activation, or if you later connect a Pro licence or start a
trial. When that happens it sends your site URL, the WordPress and PHP
versions, this plugin’s version, and the email address of the account you
connect with. Declining the prompt leaves the plugin fully functional.

Service provider: Freemius, Inc. — https://freemius.com
Terms of Service: https://freemius.com/terms/
Privacy Policy: https://freemius.com/privacy/

Glissando – Animated Audio Player

Source code