Allessandro Liberati was a Music good articles nominee, but did not meet the good article criteria at the time. There are suggestions below for improving the article. Once these issues have been addressed, the article can be renominated. Editors may also seek a reassessment of the decision if they believe there was a mistake.
I uploaded this article last night. Please don't fret on the missing wikilinks because I'll be adding lots of those when I get the chance today, so please don't feel you have to just because there are none.
The major issue with this article are the POV wordings that are teeming in the Style section. An example is "In 1895, he became known for establishing now a well-known tradition of circus bands when be began traveling with the superstars of the circus world, the Ringling Brothers, for whom he opened performances of their popular circus gaiety." - the underlined is not defined exactly (and is confusing), and the italicized wordings are too expressive for an encyclopedia.
What is his nationality? The first sentence should include his date of birth and date of death, per WP:OPENPARA
That he was a virtuoso should not be merely noted in the lead
Only the infobox informs us when he was born or died. So, there should be more information regarding that, such as the cause of his death.
You use the +ing form too often. For example, instead of "he was also known for being a respectable bandleader for" you could just write "he was a respectable bandleader". The prose will become more engaging.
"He married his wife, Elsie, in 1881. They lived in New York and had one daughter." is unreferenced. What was his daughter's name? Perhaps add more information to his family life.--Tomcat(7) 20:34, 25 December 2012 (UTC)
Most of the concerns remain unaddressed, so failing this. Wizardman 23:58, 13 January 2013 (UTC)