Music that is actually in 7 is hard to find, and the following examples are no different. Sure, 4+3=7. But you still hear the split. And unlike "The Ocean," there's no 7/8 "clave" splitting the measure up. These are made up of measures of 4 and 3, though the effect achieved in each is quite different.
The first song I ever heard "in 7" was probably "Money" by Pink Floyd, written by Roger Waters. It's anchored by the following bass line:
"Jive Talkin'" by the Bee Gees does something quite a bit different. Here's the sweet-ass major pentatonic synth lead during the instrumental breaks (1:16):
I love dancing.