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Show HN: I built a site that lets users find playlists by songs they contain

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Re: Show HN: I built a site that lets users find playlists by songs they contain

#72

I once built a site that used Spotify playlist data directly. The intention was that you could take one of your own playlist and find playlists that have the greatest overlaps. The intention was to find people with a similiar musical taste to yourself. Interestingly I found a lot of new music that way and also found other music directions that suddenly interested me. Thinking this a little further, it provides the pe…

Isn't that how Spotify originally did their discover playlists? Seems like I remember they took the songs you listened to most frequently, found playlists other users have made containing that song, then looked for songs you haven't listened to on the platform yet that frequently appeared in playlists with the songs you play frequently.

Re: Show HN: I built a site that lets users find playlists by songs they contain

#73

This kind of thing has always seemed quite interesting (and worrying!) to me from an OSINT perspective. It seems like if you just know a couple of some anonymous person's favourite songs from various genres, you could identify possible Spotify accounts they may also own. As far as I can tell, it's basically impossible to discuss anything remotely personal online without jeopardizing pseudonymity.

It's kind of horrifying to learn that it only takes 33 bits of information to uniquely identify any living human on the planet. log2(8e9) ~= 32.9.

Re: Show HN: I built a site that lets users find playlists by songs they contain

#76

This kind of thing has always seemed quite interesting (and worrying!) to me from an OSINT perspective. It seems like if you just know a couple of some anonymous person's favourite songs from various genres, you could identify possible Spotify accounts they may also own. As far as I can tell, it's basically impossible to discuss anything remotely personal online without jeopardizing pseudonymity.

What data would be useful from finding someone's Spotify? I dont use it so I'm not sure what details can be compromised.

Re: Show HN: I built a site that lets users find playlists by songs they contain

#78

This kind of thing has always seemed quite interesting (and worrying!) to me from an OSINT perspective. It seems like if you just know a couple of some anonymous person's favourite songs from various genres, you could identify possible Spotify accounts they may also own. As far as I can tell, it's basically impossible to discuss anything remotely personal online without jeopardizing pseudonymity.

It's kind of horrifying to learn that it only takes 33 bits of information to uniquely identify any living human on the planet. log2(8e9) ~= 32.9.

If it helps (with the horror I mean), that's just a sort of lower bound of course - if you could choose your bits carefully and ideally (and I suppose they'd probably be pretty weird (to a human) and overlapping/multi-dimensional, like 'lives in Europe or Antarctica' or 'uses macOS and is female') which of course you couldn't.

i.e. in practice, for practical metrics, it probably takes a lot (I'm not going to guess how many) more.

Re: Show HN: I built a site that lets users find playlists by songs they contain

#79

This kind of thing has always seemed quite interesting (and worrying!) to me from an OSINT perspective. It seems like if you just know a couple of some anonymous person's favourite songs from various genres, you could identify possible Spotify accounts they may also own. As far as I can tell, it's basically impossible to discuss anything remotely personal online without jeopardizing pseudonymity.

Most people that know my taste in music already have my spotify because they're my friends and I gave it to them. As for worrying about pseudonymity, spotify lets you hide listening activity and make all your playlists private.

Re: Show HN: I built a site that lets users find playlists by songs they contain

#80
post #77

It's kind of mind boggling to me that Spotify doesn't offer this themselves. Seems like use case 101

There's a post in their official forums with 60+ pages from 2012, but they state that there's not enough demand...
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