Is there an app to share music between iPhone and Android?

Me and my boyfriend want to compare music libraries, simple enough. But we're about an hour apart and he has an Android while I have a iPhone. There's lots of great of apps to stream songs you select to people but it seems that they're all limited to the kind of phone you have… There aren't any cross-platform music streaming apps… That we know of. Does anyone know of any? Or of another solution?

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