I can recommend:
"Success Songs" CD by Paul Hoffman, especially the first song "It's My Time" - you can download a demo form http://successsongs.com
or listen online CD Baby: PAUL HOFFMAN: Success Songs vol. 1
"Awake" CD by Josh Groban, especially "You Are Loved (Dont Give Up)" - this is quite close to the tenor Andrea Bocelli but much lighter.
I usualy listen to reiki or baroque music when I want to boost motivation while working mentally, trance/techno/disco music when working physically.