Question: What do Jimmie Ross and Jas Mann have in common?

Context paragraphs:
Bates (Kent cricketer): Bates (first name and dates unknown) was an English first-class cricketer who made one appearance for Sir Horace Mann's XI in 1789, scoring one run and holding two catches.  Bates played for Mann's team ("aka" East Kent) against a West Kent team managed by Stephen Amherst on 29–30 June 1789 at Coxheath Common, Mann's XI winning by 8 runs.

Ross Common Manor: Ross Common Manor is a national historic district located in Ross Township, Monroe County, Pennsylvania.  It encompasses four contributing buildings and one contributing site on the historic estate of Ross Common Manor.  The manor house was built about 1810, and is a 2 ⁄ -story, five-bay-wide stone dwelling with a gable roof.  The 1809 stone kitchen building was attached to the main house about 1890.  It was built by Congressman John Ross (1770–1834).  Also on the property are a stone ice house (1810), a 3 ⁄ -story frame grist mill, a former barn (1880) converted to a theater in the 1930s, and the Ross family cemetery with burials dating from 1814 to the 1850s.  During the mid-19th century, the manor house was used as an inn and tavern.

Jas Mann: Jasbinder Singh "Jas" Mann (born 24 April 1971) is a British songwriter, musician, singer, record producer and film producer.  He was lead singer of Babylon Zoo, known for their 1996 single "Spaceman" and top five album "Boy with the X-ray Eyes".  He has produced/distributed over 20 features films, including the BAFTA winning documentary "The Imposter" and was executive producer of Simon Pegg's "Fantastic Fear of Everything".

Mann–Elkins Act: The Mann–Elkins Act was a 1910 United States federal law that was among the Progressive era reforms.  The Act got its name from congressmen Stephen Benton Elkins and James Robert Mann.  Both congressmen sponsored and created legislation about interstate trade which would go on to be signed into law.  The Mann–Elkins Act would further expand upon the work by these two men (the Elkins Act and the Mann Act).  The act was part of an initiative by President William Howard Taft "to regulate destructive competition and unfair trade practices" in order to make good on promises made during his campaign.  It was created because, "Taft believed that the 1887 Interstate Commerce Act should be amended so as to permit railroads to make traffic agreements, which would preserve the principle of competition, and avoid the common control of competing railroad lines."  This act was in direct response to railroad price increase that took place in 1910.  The Act placed a price ceiling on interstate commerce and transportation companies to ensure fair market value of prices.  The Act extended the authority of the Interstate Commerce Commission (ICC) to regulate the telecommunications industry, and designated telephone, telegraph and wireless companies as common carriers. .  The act placed all telecommunications under the ICC's control.  It was passed by the United States Senate, 50-12.

If We Hold on Together: "If We Hold on Together" is the theme song to the 1988 film "The Land Before Time", and is performed by Diana Ross.  Played during the film's ending credits, it was released on the film's soundtrack as well as the Ross album "The Force Behind the Power".  The song was co-written by James Horner, Barry Mann and Will Jennings.  Released as a single it reached the top 30 on the US adult contemporary chart, as well as giving Ross her biggest hit ever in Japan (#1) and later reaching #11 in the UK.

Full Circle (Jimmie Ross album): Full Circle is the debut album of Pittsburgh rock/pop musician Jimmie Ross, best known as a member of the Jaggerz.  The album, released in 2010, contains the best of his songs from the Jaggerz.

Yacht Club Boys: The Yacht Club Boys was a quartet of American comic singers, popular in the 1920s and 1930s: Charles Adler, George Kelly, Billy Mann, and Jimmie Kern (later known professionally as James V. Kern).  They made recordings from the 1920s and appeared as a specialty act in several feature films of the 1930s.  The Yacht Club Boys' screen career (and on-screen behavior) paralleled those of The Ritz Brothers, a zany musical-comedy trio doing the same type of musical burlesques.

Jimmie Ross: Jimmie Ross is an American rock guitarist and vocalist who is best known for being a member of Pittsburgh band the Jaggerz, known for their 1970 hit "The Rapper".  During the band's initial existence of 1965-1976, the bassist shared the duties of lead vocalist with guitarist Donnie Iris.  By the time the Jaggerz regrouped in 1989, Iris was well into his solo career, and Ross became the sole lead vocalist and remained bassist.  He continues to hold both positions today.

All the Money's Gone: "All the Money's Gone" is a single by Babylon Zoo and the first to be taken from the second album "King Kong Groover".  The single was written and produced by Jas Mann and stalled at #46.  An animated music video was made to accompany the single.

Common school: A common school was a public school in the United States during the nineteenth century.  Horace Mann (1796-1859) was a strong advocate for public education and the common school.  In 1837, the state of Massachusetts appointed Mann as the first secretary of the State Board of Education where he began a revival of common school education, the effects of which extended throughout America during the 19th century.

Supporting paragraphs: Jimmie Ross Jas Mann
Answer: singer