• Katherine McPhee – vocals •
Zac Rae – keyboards (1–3, 6, 7, 9, 10, 13), acoustic piano (2–5, 7, 8),
Hammond B3 organ (2, 5, 6), synthesizers (7) •
Patrice Rushen – acoustic piano (4) • Billy Childs – acoustic piano (5, 12) • Boots Ottestad – keyboards (11), acoustic guitar (11), electric guitar (11), bass (11), drums (11), percussion (11),
music box (11) •
Mark Goldenberg – electric guitar (1, 2) • Michael Chaves – guitars (1–7, 9, 10, 13), backing vocals (9) •
John Alagia – acoustic guitar (2), backing vocals (2, 6, 9), acoustic piano (3) •
Paul Jackson Jr. – acoustic guitar (4), electric guitar (4) • Sean Hurley – bass (1–3, 5–7, 9, 13) • Rhonda Smith – bass (4) •
Victor Indrizzo – drums (1–3, 5–10, 13), percussion (1–3, 6, 7), programming (1, 3, 7) • Anthony Moore – drums (1) • Oliver Kraus – cello (1, 8, 10, 12), violin (1, 8, 10, 12), string arrangements (1, 8, 10, 12) •
Lucie Silvas – backing vocals (1–3, 7, 9) •
Jason Reeves – backing vocals (3), vocals (6) • Rachel Yamagata – backing vocals (3)
Production and Technical • Suite 3 Music – executive producer • Brian Scheuble – recording (1–3, 5–10, 12, 13) •
Jeff Lorber – recording (4) • Chris Thompson – recording (4) • Boots Ottestad – recording (11) • Lars Fox –
Pro Tools engineer (11) • Mark Endert – mixing (1–3, 6, 7, 9, 11) • Jon Gass – mixing (4, 5, 8, 10, 12, 13) • Nolan Sipe – assistant engineer (1–3, 5–10, 12, 13) • Michael John Feig – assistant engineer (4) • Eddy Schreyer – mastering at Oasis Mastering (Burbank, California) • Mitchell Cohen – A&R direction • Evelyn Morgan – A&R administration • Lisa Hansen – release coordinator • Andy Kman – release coordinator • John Newcott – release coordinator • Hollis King – art direction • Sachico Asano – graphic design •
Ellen von Unwerth – photography • Joanne Gair – make-up • Victoria Adcock – stylist ==Critical reception==
Unbroken received generally mixed reviews. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream critics, the album has received a score of 58, indicating "mixed or average reviews". •
Allmusic stated: "On Idol, McPhee always favored middle of the road over modern, and Unbroken returns her to that course, bringing her somewhere within the vicinity of Paula Cole (who co-writes the title track), Rachael Yamagata (who co-writes “Keep Drivin’”) and Mandy Moore's stylized ‘70s throwback, flavored with the slightest traces of modern sounds, including a vague borrowing of Beyoncé phrasing." •
Billboard stated: "McPhee sounds much more comfortable amid Alagia's rootsy singer/songwriter settings than she did surrounded by the shiny R&B beats of her self-titled debut." •
Boston Globe said: "Unbroken is a conventional set, at times too much so, with a stripped-down musical backdrop of acoustic guitars and piano. McPhee has smartly reined in her vocal approach to find the nuances of the lyrics without trying to raise the roof." •
Entertainment Weekly said: "The Idolrunner-up's pleasant-but-unremarkable vocals can't elevate this tepid collection." ==Charts==