Michael Buble on 'First dance' album cover reminds me of Sinatra. Eye contact with potential customer is good solution for cover. And of course good photography sells better. The only thing is missing, i think, is his signature, would look stylish in the corner. Apart from his voice, I love his style and the fact, he kind of seams 'new' even though he makes 'old' music.
Brighten your day, enjoy Buble. He does a great job covering this Sinatra favourite: