One of my most favourite songs from the recent time is this one. Usually I end up trying to condense as much melody as possible into every single moment: not even intentionally, I just like making stuff that sounds that way. But that time I consciously tried to make the song a bit longer, and it ended up being 3:45 instead of the <2 minute songs I usually make.
The base melody is somewhat repetetive, but the different melodies played on a few different synths and little additions here and there are meant to make the whole thing not as same-y.