Choose between single or double buttons for two actions

I'm trying to find what is the best approach for the following scenario.

I'm building Music Player App(iOS). For each played song we have two options :

  1. Add the song to My Music Library

  2. Add the song to a new/exist Playlist

I'm trying to super-minimize the UI - so i've tried the one button concept.

When clicking the plus button, it's automated adding the song into my Music Library, and a bottom card menu pops with the options to add to a new/exists playlist(and cancel).

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That said, here is the issue:

After the user click the plus button and adds the song, he can remove it by clicking the plus again(which will be a X button). But with this scenario, if i'll not be adding the song into one of the playlist, i'll not be able to open the playlist menu again, unless he will remove - add it again.

Is it "okay" to allow the playlist options only when adding the song? Or it's a must to add a playlist button for future use(just in case)? All tho' adding and removing the song will pop it up again + you'll be able to add the song from the playlist it self and not thru the song.

What's your thoughts about that?

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