# Multi-User Sing Along

![](https://2081718993-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LCV6BzFZW04-z-vj0aS%2F-LDDhSOK7gZl8FOWN5Mq%2F-LDDhdfTUYwr_uzW8YQK%2Fmult-user-sing.png?alt=media\&token=17d10ce8-253b-4b58-b823-515d9632a56c)

Create a virtual *American Idol* face-off singing competition. Challenge your users to sing along a trending tune, upload and transcode the videos into a series of streams to create an *Acapella* video.

***Here's a video for some inspiration!***

## Choose a Serverless Stack

Resist the urge to create an Express app from scratch and deploy a server for this one! Instead, focus on extending our[ Blueprint starter  application](https://cloudinary.gitbook.io/cil-hackathon-guide/~/edit/primary/thought-starters/immersive-wayne-shorter-catalog)  built on Auth0 extend's FaaS serverless stack. .  You'll be able to quickly use our API's example endpoints or extend it further with other APIs.  Then call each API directly within a Single Page App (SPA) to take advantage of the responsive design possibilities.

Cloudinary's APIs work extremely well with Auth0 [Webtasks](https://webtask.io) and other serverless platforms. We support many languages, including JavaScript and [Node.js](https://cloudinary.com/documentation/node_integration).

## Use This Guide to Get Started

We've organized the Cloudinary resources in this guide by functionality so you can quickly add a feature to your application. Each article is a short and concise walkthrough, so you won't have to comb too deep through our extensive [documentation](https://cloudinary.com/documentation), unless you want to.

## Tweet/Share your Experience

We know your Hackathon experience will be fun and engaging. Don't forget to share that with your friends on social media. ***In fact, we've added links at the top of this guide to make sharing easy.*** Learning about visualizing an audio waveform? Show the world what you are working on and let them learn about the technologies right along with you.

## Tell us About your Cool Hack

We'd love to hear what you built at the hackathon, we may even showcase it, so [drop us a line](mailto:Dan.Gilmore@cloudinary.com).