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21 May 2023 Lenny's Podcast Lessons from scaling Spotify: The science of product, taking risky bets, and how AI is already impacting the future of music | Gustav Söderström (Co-President, CPO, and CTO at Spotify)
“There was a lot of negative feedback on Twitter on some of that. So let me actually dig into some detail because I think for product people listening to this, this is an interesting lesson that I think few companies talk about because you want talk about everything that went exactly as you thought they would and you don't want to talk about the things that didn't go exactly as you thought they would.”
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- 21 May 2023
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…Speaking of extremes, I want to talk a bit about taking big bets. So you guys had this big launch event recently where you basically redesigned the whole primary feed of Spotify to make it feel more like where apps are going, like TikTok reels feel of just stream, and you start hearing videos and music starts playing and some people loved it, some people did not. And I'm curious as a product leader, how you think about thinking long term and dealing with people that are just like, "What the hell's ... I hate change, stop changing things." How do you think about that? Who do you listen to? Who do you ignore? How do you know to stay the course? How do you approach that? Gustav Söderström Yeah, you're being very kind. There was a lot of negative feedback on Twitter on some of that. So let me actually dig into some detail because I think for product people listening to this, this is an interesting lesson that I think few companies talk about because you want talk about everything that went exactly as you thought they would and you don't want to talk about the things that didn't go exactly as you thought they would. Gustav Söderström So I'll go through what we are trying to achieve and what we learned. So Spotify is mainly a background application, and for a long time, we've been considered very good at background music and podcast recommendation. When the phone is in your pocket and you're listening to an EDM playlist or pop playlist or something, we're really good at inserting another EDM track there or another pop track there or something like that in the background. Gustav Söderström What we hear from users again and again, though, is that they say that they get trapped in a taste bubble. So I love my Spotify, I love this, but I'm a little bit bored with EDM now and Spotify's not suggesting something completely new. And if you think about that problem, it may sound similar to the recommendation problem, it's just another recommendation problem, but it's actually fundamentally different because when you're recommending another EDM track inside the EDM playlist, you have a lot of signal from that user that they like EDM. But if you're going to recommend a completely new genre, by definition, you have no idea. Because if you had an idea, it wasn't new to them. So you can't know anything. So back to hit rate, your hit rate is going to be incredibly low when you suggest something completely new to the user. Gustav Söderström So this problem of helping people get out of the taste bubble isn't that easy as it sounds. And we can't really take some genre that maybe isn't typical. So I'm a big fan of Reggaeton, for example. It's not typically ... It's not that common in Sweden. And if you would look the rest of my profile, it's EDM heaviness, you probably wouldn't have guessed it. And Spotify wouldn't have guessed it. So if I'm listening to my favorite EDM playlist in the background or maybe my metal playlist, metal is very big in Sweden, it's really hard for us to just insert a Reggaeton track in the middle of that. Most people are going to think Spotify's broken. Yeah. Gustav Söderström What the hell are they thinking? So that doesn't really work. So in order to help people break out of their taste bubbles, you need something different. You need something where your hit ratio can be very low and you need people to expect it to be very low. Gustav Söderström So when we recommend things in the background, our hit ratio needs to be at least nine out of 10, maybe one dud is okay, but if you get five duds, you're going to think we broke your playlist and your session. We need something where one out of 10 is a success. needs to be at least nine out of 10, maybe one dud is okay, but if you get five duds, you're going to think we broke your playlist and your session. We need something where one out of 10 is a success. If you find one gem out of 10 tries, you're very happy. So you need a completely different paradigm. And you also need to be able to go through many candidates quickly because the hit rate is so low. You can't take three minutes per item. It's like, "Okay, I didn't like this," and it's still like two minutes left before the next one comes on. You need to quickly say, "No, no, no." So the obvious candidates for this are these feed-type experience, where you can go through lots of content, you're expecting the hit ratio to be much lower. And if you don't like it, the cost is very low, you just swipe. Gustav Söderström And then this is the reason why people have been ... When they want to break out of their taste bubbles or when they come into Spotify and listen to something completely new, it is usually because they found it on one of these services, like a TikTok or YouTube or something, where they get exposed to lots of new content. So people were asking us for these tools and so that's what we wanted to solve for. And so we built a bunch of features, feed-like structures, where you can go through either a new genre with many tracks or a podcast channel with genre with many episodes or even full playlists. And we implemented those and we put them in something called subfeeds. So in the current experience, and this is roll out worldwide, if you click the podcast subfeed, you get a feed of podcast episodes. Click the music subfeeds, you get a feed of playlists where you can go through many playlists. And if you don't understand the name, you can quickly hear what they sound like and check out a few tracks and understand if this is for you. And if you go through the search and browse page, you can find completely new genres that you can quickly go through. Gustav Söderström And so those are working as we intended. People go to them when they want to find new music. They browse through them and they save new songs. So they're working as we intended. The thing that didn't work as we intended was when users asked us for this again and again, we took the sum of these things and we put it on Home because people ask so much about discovery and we can see clearly how correlated discoveries with retention on Spotify and so forth. But what we misjudged or failed or rather learned about our own homepage is that the way it works right now, and this is what you can see in the Twitter comment, if you remove the angry voices and try to see what they're saying, they're saying the following, which is actually quite clear in the quantitative data as well, that if you look at what people do on Spotify's homepage, the current one, it is almost 90% what we call recall. Gustav Söderström So it is either getting to a session that you're already in or a specific playlist that you know you want to get to or at least a specific use case. So you come in with a high intent, you actually knew what you wanted, and maybe only 10% of the time as a true discovery,…
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