Oliver Njego (Serbian Cyrillic: Оливер Њего, ] ) is a Serbian operatic baritone, who also crossed over into popular music, eventually becoming one of the most respected and most famous Serbian opera singers.
Vincenzo Calvesi (fl.
 1777–1811) was an Italian operatic tenor and impresario.
 A skillful lyric tenor, he began his career performing in opera houses in Italy during the 1770s.
 He was active in Dresden in 1782 to 1783 and then spent most of his time performing in Vienna from 1785 to 1794.
 He is best remembered today for creating the role of Ferrando in the world premiere of Wolfgang Amadeus Mozart's "Così fan tutte" in 1790.
 That same year the Viennese publication "Grundsätze zur Theaterkritik" described him as "one of the best tenors from Italy…with a voice naturally sweet, pleasant and sonorous."
 He was later active in Rome as an impresario up until 1811.
Domenico de' Panzacchi (1733 – after 1805) was an Italian operatic tenor and the first Arbace in Mozart's "Idomeneo re di Creta".
 He was born in Imola.
 By 1780, his singing style was completely out of date, but Leopold Mozart advised his son to engage Panzacchi because he was such a good actor.
 He sang the title roles in Bernasconi’s Agelmondo (1760), Temistocle (1762) and Demofoonte (1766).
 Indeed, in the role created for him Panzacchi moves very easily between fear and hope, and the role was so influential that it was imitated many times.
 From 1760 until he was pensioned in 1782, he was one of the highest-paid tenors in Europe.
 He died in Bologna.
Carlo Bergonzi (13 July 1924 – 25 July 2014) was an Italian operatic tenor.
 Although he performed and recorded some bel canto and verismo roles, he was above all associated with the operas of Giuseppe Verdi, including a large number of the composer's lesser known works that he helped revive.
 Additionally, he sang more than 40 other roles throughout his career.
 Bergonzi is considered one of the 20th century’s most distinguished operatic tenors.
Luciano Pavarotti, (] ; 12 October 19356 September 2007) was an Italian operatic tenor who also crossed over into popular music, eventually becoming one of the most commercially successful tenors of all time.
 He made numerous recordings of complete operas and individual arias, gaining worldwide fame for the quality of his tone, and eventually established himself as one of the finest tenors of the 20th century.
Agustarello Affre (23 October 1858 - 27 December 1931) was a French operatic tenor.
 He possessed a powerful, firm and exceptionally beautiful voice which garnered him the nickname the "French Tamagno" in comparison to the great Italian tenor.
 He was one of the leading operatic tenors in Paris from 1890-1911.
 He spent the last years of his career singing and directing operas in the United States.
 After World War I, he lived in retirement in France.
Neil Jason, is an American session bass guitarist, singer, songwriter, multi-instrumentalist, producer and composer.
 In a career spanning more than 30 years, he has worked with some of the biggest recording artists, including John Lennon, Billy Joel, Roxy Music, Mick Jagger, Pete Townshend, Paul McCartney, Paul Simon, Kiss, Michael Jackson, Brecker Brothers, Cyndi Lauper, Dire Straits, Bryan Ferry, Michael Franks, Eddie Van Halen and tenor Luciano Pavarotti.
 He also writes for TV and film.
Enrico Caruso (] ; 25 February 1873 – 2 August 1921) was an Italian operatic tenor.
 He sang to great acclaim at the major opera houses of Europe and the Americas, appearing in a wide variety of roles from the Italian and French repertoires that ranged from the lyric to the dramatic.
 Caruso also made approximately 260 commercially released recordings from 1902 to 1920.
 All of these recordings, which span most of his stage career, remain available today on CDs and as downloads and digital streams.
Eddie Watkins Jr is an American session bass player, who played on many major popular hit records from the mid 1970s through the mid 1990s.
 Watkins made his professional session musician debut at age 17 for Norman Whitfield, on the Temptations' "Masterpiece".
Giovanni Martinelli (October 22, 1885 – February 2, 1969) was an Italian operatic tenor.
 He was associated with the Italian lyric-dramatic repertory, although he performed French operatic roles to great acclaim as well.
 Martinelli was one of the most famous tenors of the 20th century, enjoying a long career at the Metropolitan Opera in New York City and appearing at other major international theatres.

Question: With what American session bass guitarist, singer, songwriter, multi-instrumentalist, producer and composer did an Italian operatic tenor who also crossed over into popular music who eventually becoming one of the most commercially successful tenors of all time
Answer: Neil Jason