I find Maj7 chords to be more difficult to use than triads or min7 chords, and I don’t seem to be entirely alone. Finding rock songs that feature the Maj7 wasn’t as easy as I expected. Here’s what I found: U2 One, Led Zeppelin The Rain Song, Paul McCartney Band on the Run, Peter Frampton Show me the Way, and John Lennon’s Imagine. In jazz, I’m pretty confident this would be a lot easier, and I’d also guess that if I’d scoured the Steely Dan catalog, I’d have come up with more good examples.
Easily placed or not, it’s a good place to start when it comes to cataloging voicings being the 4-note form of the first degree of the major scale. Below are all the voicings I find most useful for a Maj7.