---
id: 65327e9c7ea42e125256b29a
title: Step 7
challengeType: 0
dashedName: step-7
---
# --description--
We've added the rest of the songs to the `allSongs` array for you.
Next, you'll learn about the Web Audio API and how to use it to play songs. All modern browsers support the Web Audio API, which lets you generate and process audio in web applications.
Use `const` to create a variable named `audio` and set it equal to `new Audio()`. This will create a new HTML5 `audio` element.
# --hints--
You should use the `new` keyword to create an instance of the `Audio` object.
```js
assert.match(code, /new\s+Audio\(\s*\)\s*;?/)
```
You should assign the `Audio` object to a constant named `audio`.
```js
assert.match(code, /const\s+audio\s*=\s*new\s+Audio\(\s*\)\s*;?/)
```
# --seed--
## --seed-contents--
```html
Learn Basic String and Array Methods by Building a Music Player App
```
```css
:root {
/* colors */
--primary-color: #dfdfe2;
--secondary-color: #ffffff;
--app-background-color: #4d4d62;
--background-color: #1b1b32;
--foreground-color: #3b3b4f;
--highlight-color: #f1be32;
/* font sizes */
--root-font-size: 16px;
font-size: var(--root-font-size);
/* font-families */
--font-headline: "Roboto Mono", monospace;
--font-family: "Lato", sans-serif;
}
*,
*::after,
*::before {
box-sizing: border-box;
}
body {
background-color: var(--app-background-color);
color: var(--primary-color);
font-family: var(--font-family);
}
h1 {
font-size: 1.125rem;
line-height: 1.6;
}
h2 {
font-size: var(--root-font-size);
}
ul {
margin: 0;
}
.container {
margin-top: 10px;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
row-gap: 5px;
}
.player,
.playlist {
width: 450px;
background-color: var(--background-color);
border: 3px solid var(--foreground-color);
}
.player {
height: 260px;
padding: 10px;
display: flex;
flex-direction: column;
align-items: center;
row-gap: 10px;
}
.player-bar,
.playlist-bar {
display: flex;
justify-content: space-between;
align-items: center;
padding: 0 5px;
width: 100%;
height: 30px;
background-color: var(--foreground-color);
}
.parallel-lines {
display: flex;
flex-wrap: wrap;
row-gap: 6px;
padding: 0 5px;
}
.parallel-lines > div {
height: 2px;
width: 100%;
min-width: 75px;
background-color: var(--highlight-color);
}
.fcc-title,
.playlist-title {
color: var(--secondary-color);
margin: 0 10px;
font-family: var(--font-headline);
}
.player-content {
display: flex;
background-color: var(--foreground-color);
width: 430px;
height: 200px;
column-gap: 13px;
align-items: center;
justify-content: center;
}
#player-album-art {
background-color: var(--secondary-color);
border: 6px solid var(--background-color);
}
#player-album-art img {
width: 150px;
display: block;
}
.player-display {
display: flex;
flex-direction: column;
row-gap: 20px;
padding: 14px;
background-color: var(--background-color);
height: 153px;
width: 226px;
}
.player-display-song-artist {
height: 80px;
}
.player-buttons svg {
fill: var(--primary-color);
}
.playing > svg {
fill: var(--highlight-color);
}
.player-buttons {
display: flex;
justify-content: space-around;
}
button {
background: transparent;
border: none;
color: var(--primary-color);
cursor: pointer;
font-size: var(--root-font-size);
outline-color: var(--highlight-color);
text-align: center;
}
.playlist-song {
outline-color: var(--highlight-color);
}
.playlist li:not(:last-child) {
border-bottom: 1px solid var(--background-color);
}
button:focus,
.playlist-song:focus {
outline-style: dashed;
outline-width: 2px;
}
/* Playlist */
.playlist {
height: auto;
padding: 10px;
display: flex;
flex-direction: column;
align-items: center;
row-gap: 10px;
}
#playlist-songs {
width: 430px;
height: 100%;
background-color: var(--foreground-color);
display: flex;
flex-direction: column;
row-gap: 8px;
padding: 8px 9px;
visibility: visible;
justify-content: start;
list-style: none;
}
.playlist-song {
display: flex;
height: 55px;
justify-content: space-between;
align-items: center;
padding: 5px;
}
[aria-current="true"] {
background-color: var(--background-color);
}
[aria-current="true"] p {
color: var(--highlight-color);
}
.playlist-song-info {
height: 100%;
display: flex;
flex-direction: row;
align-items: center;
justify-content: space-around;
column-gap: 7px;
padding: 5px 0;
font-family: var(--font-family);
}
#player-song-title,
#player-song-artist {
margin: 0;
}
#player-song-artist {
color: var(--highlight-color);
font-size: 0.75rem;
}
#player-song-title {
font-size: 1.125rem;
}
.playlist-song-title {
font-size: 0.85rem;
width: 241px;
text-align: left;
}
.playlist-song-artist {
font-size: 0.725rem;
width: 80px;
}
.playlist-song-duration {
font-size: 0.725rem;
margin: auto;
font-family: var(--font-headline);
width: 30px;
}
.playlist-song-delete {
padding: 0;
width: 20px;
height: 20px;
}
.playlist-song-delete,
.playlist-song-delete {
fill: var(--foreground-color);
}
.playlist-song-delete:hover circle,
.playlist-song-delete:focus circle {
fill: #ff0000;
}
@media (max-width: 700px) {
.player,
.playlist {
width: 300px;
}
.player {
height: 340px;
}
#playlist-songs {
height: 280px;
padding: 5px 6px;
overflow-y: scroll;
overflow-x: hidden;
scrollbar-color: var(--background-color) var(--secondary-color);
scrollbar-width: thin;
}
#playlist-songs::-webkit-scrollbar {
width: 5px;
}
#playlist-songs::-webkit-scrollbar-track {
background: var(--background-color);
}
#playlist-songs::-webkit-scrollbar-thumb {
background: var(--secondary-color);
}
h1 {
font-size: 0.813rem;
}
h2 {
font-size: 0.75rem;
}
.player-bar,
.playlist-bar,
.player-content,
#playlist-songs {
width: 280px;
}
.playlist-song {
justify-content: space-between;
}
.playlist-song-title {
width: 140px;
}
.playlist-song-artist {
width: 40px;
}
.playlist-song-duration > button {
padding: 0;
}
.player-content {
display: inline;
position: relative;
justify-items: center;
height: 100%;
}
#player-album-art {
z-index: -100;
height: 280px;
box-shadow: none;
background: #000;
}
#player-album-art img {
width: 100%;
opacity: 0.6;
}
.player-display-song-artist {
padding: 0 10px;
}
.player-display-song-artist > p {
white-space: pre-wrap;
}
.player-display {
position: absolute;
width: 100%;
z-index: 1000;
background-color: transparent;
top: 0;
height: 280px;
justify-content: space-between;
text-align: center;
}
}
```
```js
const playlistSongs = document.getElementById("playlist-songs");
const playButton = document.getElementById("play");
const pauseButton = document.getElementById("pause");
const nextButton = document.getElementById("next");
const previousButton = document.getElementById("previous");
const shuffleButton = document.getElementById("shuffle");
const allSongs = [
{
id: 0,
title: "Scratching The Surface",
artist: "Quincy Larson",
duration: "4:25",
src: "https://cdn.freecodecamp.org/curriculum/js-music-player/scratching-the-surface.mp3",
},
{
id: 1,
title: "Can't Stay Down",
artist: "Quincy Larson",
duration: "4:15",
src: "https://cdn.freecodecamp.org/curriculum/js-music-player/can't-stay-down.mp3",
},
{
id: 2,
title: "Still Learning",
artist: "Quincy Larson",
duration: "3:51",
src: "https://cdn.freecodecamp.org/curriculum/js-music-player/still-learning.mp3",
},
{
id: 3,
title: "Cruising for a Musing",
artist: "Quincy Larson",
duration: "3:34",
src: "https://cdn.freecodecamp.org/curriculum/js-music-player/cruising-for-a-musing.mp3",
},
{
id: 4,
title: "Never Not Favored",
artist: "Quincy Larson",
duration: "3:35",
src: "https://cdn.freecodecamp.org/curriculum/js-music-player/never-not-favored.mp3",
},
{
id: 5,
title: "From the Ground Up",
artist: "Quincy Larson",
duration: "3:12",
src: "https://cdn.freecodecamp.org/curriculum/js-music-player/from-the-ground-up.mp3",
},
{
id: 6,
title: "Walking on Air",
artist: "Quincy Larson",
duration: "3:25",
src: "https://cdn.freecodecamp.org/curriculum/js-music-player/walking-on-air.mp3",
},
{
id: 7,
title: "Can't Stop Me. Can't Even Slow Me Down.",
artist: "Quincy Larson",
duration: "3:52",
src: "https://cdn.freecodecamp.org/curriculum/js-music-player/cant-stop-me-cant-even-slow-me-down.mp3",
},
{
id: 8,
title: "The Surest Way Out is Through",
artist: "Quincy Larson",
duration: "3:10",
src: "https://cdn.freecodecamp.org/curriculum/js-music-player/the-surest-way-out-is-through.mp3",
},
{
id: 9,
title: "Chasing That Feeling",
artist: "Quincy Larson",
duration: "2:43",
src: "https://cdn.freecodecamp.org/curriculum/js-music-player/chasing-that-feeling.mp3",
},
];
--fcc-editable-region--
--fcc-editable-region--
```
