![]() Here again, you'll want to parse through the response from the recommendation and grab the IDs that you will then pass to your newly created playlist. Create and update the playlistįinally, now that you have a list of songs you need to actually create the playlist and then add those songs to the playlist. I have a drop-down with all the genres Spotify offers and in combination with the min and max attribute ranges you can get a recommendation for songs that match. I've decided to use genre as the "seed" but Spotify allows you to use genre, song, or artist as the seed for getting a recommendation. Now that the user has selected a set of ranges for the attributes and features they are interested in it's time to generate the playlist. With the slider, you can add a callback that will help keep track of what values have been selected. I've used ApexCharts.js to build out each mini histogram and Ion.RangeSlider to create a slider for the range below each one. Now that you've got the top tracks and their features, you can analyze the distribution of some of the top attributes like valence, danceability, and acousticness. Parse through the top track response to grab the IDs and then you can make the request for features and then tie the results back to the original list of top tracks. Thankfully there is a single endpoint you can use to get the features of multiple tracks but you will need to pass in the track ID. In order to learn about the characteristics of these tracks however you'll need to get the features for each track. Once you have a token you can make a request to get the user's top tracks. You'll use this token in all subsequent requests for user data. ![]() If the user allows your app you will receive a code that you can then use with your secret to get a token for the user. You will need to create a link using your client id, a redirect URL, and the specific scopes you require (for this project I'm using "user-read-private", "user-read-email", "user-top-read", "playlist-modify-public", and "playlist-modify-private"). ![]() Spotify offers a couple of ways to authenticate users but I went with the Authorization code flow. Once you're set up the process is as follows: Authenticate the user with OAuth From there you will be able to get your client id and secret to be used in your requests as well as set your redirect URLs. The first thing you'll need to do if you want to make your own app is to create a new app in the Spotify Developer platform. With everything I post on this blog, I want to share a bit of the detail that went into this project.
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