The 36-year-old songstress gushed over her husband of seven years in a lengthy Instagram post.
"Just had to take a minute to reflect on how proud I am of this incredible man!! Not just because I love him beyond description and he's an incredible person... So, even though I live with him and am blessed to be married to him, I'm still in awe of him," wrote Keys.
The "No One" singer went on to praise Swizz for setting up the 'No Commission' art project, a platform designed to support artistes by giving them 100 per cent of the profits from sales of their work.
The couple, who got married in 2010, have two sons, Egypt, six and Genesis, two.