Originally Posted by: Julian Vickersyou would only use Fmajor7 in songs that are in the key of Fmajor or Cmajor
I assume you are playing it like this:

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If you can play an Fmaj7 like that, just add an extra finger to the e string and make it this:

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-1-
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That's just a simplified F, and it shouldn't take you too long to get the hang of it. It will be hard at first, but keep at it.