Photos: The Grammy Nominations Concert Live!!
Hunter Hayes performs at the GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee.

Readers check in on Hayes topping Hot Country Songs, Josh Groban crowning the Billboard 200 without a top 40 single, the Lumineers' crossover success and more uncredited artist appearances.

As always, submit your questions about Billboard charts, as well as general music musings, to askbb@billboard.com. Please include your first and last name, as well as your city, state and country, if outside the U.S. Or, Tweet questions to Gary Trust: @gthot20

No. 1 ... BUT NOT IN THE TOP 40

Hi Gary,

With Josh Groban scoring his third No. 1 album ("All That Echoes") on the Billboard 200 this past week, I was wondering if you could please note other artists who've had No. 1 albums but no top 40 hit singles on the Hot 100.

Also, with today being Presidents' Day in the U.S., I'd like to mention that in the history of the Hot 100, the names of two presidents – Chester Arthur and Andrew Jackson – have graced the titles of No. 1 songs:  Christopher Cross' "Arthur's Theme (Best That You Can Do)" and OutKast's "Ms. Jackson."

Happy Presidents' Day!

Blair Buchta
Winnipeg, Manitoba, Canada

Hi Blair,

As discussed in Friday's "Weekly Chart Notes" column, top 40 singles success may be one of Groban's few chart feats not yet achieved, as he's become a top-selling (22 million albums sold in the U.S. so far, according to Nielsen SoundScan) AC/"popera" sensation (while still wooing younger audiences), even if he hasn't crossed over a hit to pop radio, or the Hot 100's top 40.

Before the advent of SoundScan sales data, which began powering the Billboard 200 the week of May 25, 1991, star pop acts routinely led the chart for lengthy stretches with sets whose singles soared up the Hot 100, such as Michael Jackson's "Thriller" (37 weeks), Prince's "Purple Rain" soundtrack (24) and M.C. Hammer's "Please Hammer Don't Hurt 'Em" (21).

Since, SoundScan has shown that albums often enjoy their strongest sales upon their debuts, often at No. 1 on the Billboard 200. And, that success stretches across all genres. With consumers today able to find music from so many sources – radio, online, TV, commercials, video games, etc. – a top 40-charting single on the Hot 100 is now merely one way for an act to build enough of a following to top the Billboard 200.

Here's a look at acts since just the beginning of 2010, including Groban (who's risen as high as No. 70 on the Hot 100 with "The Prayer (Live)," with Celine Dion, in 2008), that have crowned the Billboard 200 despite not having tallied a top 40-peaking Hot 100 hit. (The list excludes Jack White, who'd reached the Hot 100's top 40 as a member of the White Stripes before his solo "Blunderbuss" led the May 12, 2012, Billboard 200):
 
Artist, No. 1 Album, Date Reached No. 1 (Genre)
Josh Groban, "All That Echoes," Feb. 23, 2013 (adult contemporary/classical crossover)
Chris Tomlin, "Burning Lights," Jan. 26, 2013 (Christian)
tobyMac, "Eye On It," Sept, 15, 2012 (Christian)
Mac Miller, "Blue Slide Park," Nov. 26, 2011 (rap)
Jill Scott, "The Light of the Sun," July 9, 2011 (jazz/R&B)
Amos Lee, "Mission Bell," Feb. 12, 2011 (folk/rock)

The Decemberists, "The King Is Dead," Feb. 5, 2011 (folk/rock)
Cake, "Showroom of Compassion," Jan. 29, 2011 (alternative)
Susan Boyle, "The Gift," Nov. 27, 2010 (vocal/standards)
Disturbed, "Asylum," Sept. 18, 2010 (rock)
Arcade Fire, "The Suburbs," Aug. 21, 2010 (alternative)
Avenged Sevenfold, "Nightmare," Aug. 14, 2010 (rock)
Godsmack, "The Oracle," May 22, 2010 (rock)
Vampire Weekend, "Contra," Jan. 30, 2010 (alternative)