Question: Who started out his career on adult contemporary radio along with the performer of All That Echoes?

Knowledge 1: All That Echoes
All That Echoes is the sixth studio album by American singer-songwriter Josh Groban, produced by Rob Cavallo. The album debuted at number one on the "Billboard" 200, selling 145,000 copies in its first week. The album has sold 532,000 copies in the United States as of April 2015. [SEP] Knowledge 2: Adult contemporary music
While most artists became established in other formats before moving to adult contemporary, Michael Bublé and Josh Groban started out as AC artists. Throughout this decade, artists such as Nick Lachey, James Blunt, John Mayer, Bruno Mars, Jason Mraz, Kelly Clarkson, Adele, Clay Aiken and Susan Boyle have become successful thanks to a ballad heavy sound. Much as some hot AC and modern rock artists have crossed over into each other, so too has soft AC crossed with country music in this decade. Country musicians such as Faith Hill, Shania Twain, LeAnn Rimes and Carrie Underwood have had success on both charts.
Knowledge 1: All That Echoes
All That Echoes is the sixth studio album by American singer-songwriter Josh Groban, produced by Rob Cavallo. The album debuted at number one on the "Billboard" 200, selling 145,000 copies in its first week. The album has sold 532,000 copies in the United States as of April 2015. [SEP] Knowledge 2: Adult contemporary music
AC radio stations may play mainstream music, but they will exclude hip hop, dance tracks, hard rock, and some forms of teen pop, as they are less popular amongst the target demographic of these radio stations, which is intended for an adult audience. AC radio often targets the 25–44 age group, the demographic that has received the most attention from advertisers since the 1960s. A common practice in recent years is that many adult contemporary stations play less newer music because they also give ample airtime to hits of the past, so the de-emphasis on new songs slows the progression of the AC chart.
Knowledge 1: Adult contemporary music
While most artists became established in other formats before moving to adult contemporary, Michael Bublé and Josh Groban started out as AC artists. Throughout this decade, artists such as Nick Lachey, James Blunt, John Mayer, Bruno Mars, Jason Mraz, Kelly Clarkson, Adele, Clay Aiken and Susan Boyle have become successful thanks to a ballad heavy sound. Much as some hot AC and modern rock artists have crossed over into each other, so too has soft AC crossed with country music in this decade. Country musicians such as Faith Hill, Shania Twain, LeAnn Rimes and Carrie Underwood have had success on both charts. [SEP] Knowledge 2: Adult contemporary music
AC radio stations may play mainstream music, but they will exclude hip hop, dance tracks, hard rock, and some forms of teen pop, as they are less popular amongst the target demographic of these radio stations, which is intended for an adult audience. AC radio often targets the 25–44 age group, the demographic that has received the most attention from advertisers since the 1960s. A common practice in recent years is that many adult contemporary stations play less newer music because they also give ample airtime to hits of the past, so the de-emphasis on new songs slows the progression of the AC chart.

Answer: Michael Bublé