Never claim them of being the best band. Because there are different genres of music that would invoke different opinions, I specified that Earth Wind & Fire is arguably the greatest (R&B) band of alltime. The keyword being (R&B)
Remember Serpentine Fire, Get Away, Reasons, Devotions, Keep Your Head to The Sky, September, Fantasy, Loves Holiday, After The Is Gone, That's The Way of The World, Got to get You Into My Life, You, and Let Me Talk. Those are some songs off the top of my head..