Question: "Margaritaville" is a 1977 song by a singer-songwriter with a base of fans known as what ?

<P0-S0> John Watson, Jr. (February 3, 1935 – May 17, 1996), known professionally as Johnny "Guitar" Watson, was an American blues, soul, and funk musician and singer-songwriter. <P0-S1>  A flamboyant showman and electric guitarist in the style of T-Bone Walker, Watson recorded throughout the 1950s and 1960s with some success. <P0-S2>  His creative reinvention in the 1970s with disco and funk overtones, saw Watson have hits with "Ain't That a Bitch", "I Need It" and "Superman Lover". <P0-S3>  His successful recording career spanned forty years, with his highest chart appearance being the 1977 song "A Real Mother For Ya". <SEP> <P1-S0>  This song was written about a drink Buffett discovered at Lung's Cocina del Sur restaurant on Anderson Lane in Austin, Texas, and the first huge surge of tourists who descended on Key West, Florida around that time. <P1-S1>  He wrote most of the song that night at a friend's house in Austin, and finished it while spending time in Key West. <P1-S2>  In the United States "Margaritaville" reached number eight on the "Billboard" Hot 100 chart, and went to number one on the Easy Listening chart, also peaking at #13 on the Hot Country Songs chart. <P1-S3> "Margaritaville" is a 1977 song by American popular music singer-songwriter Jimmy Buffett from the album "Changes in Latitudes, Changes in Attitudes". <P1-S4>  "Billboard" ranked it number 14 on its 1977 Pop Singles year-end chart. <P1-S5>  It remains Buffett's highest charting solo single. <SEP> <P2-S0> "Ti amo" (] ; Italian for "I love you") is a 1977 song recorded by Italian singer Umberto Tozzi from the album "È nell'aria...ti amo". <P2-S1>  It achieved success at the time, becoming a hit in many European countries, including Sweden and Switzerland where it topped the charts. <P2-S2>  A Spanish version was released as "Te Amo", and had a good success in Spain and Latin America. <P2-S3>  Within the German-speaking countries a German version by also received a great success in 1977, peaking at number two in Germany and number ten in Austria. <P2-S4>  In 2002, the song was overdubbed as duet with singer Lena Ka under the title "Ti amo (rien que des mots)", with Italian and French lyrics. <P2-S5>  This version was a success in France and Belgium (Wallonia), reaching the top three. <P2-S6>  At the time, the original version was re-released and achieved a moderate success in France. <P2-S7>  As of August 2014, it is the 52nd best-selling single of the 21st century in France, with 393,000 units sold. <P2-S8>  A French version of this song was recorded by Dalida in 1977. <P2-S9>  An English version was also recorded by Laura Branigan in 1984, which, most notably, was a hit in Australia (reaching #2). <P2-S10>  It should not be confused with the Gina G song of the same name from 1997. <P2-S11>  In 2011, Sergio Dalma took a Spanish-language version of the song to the Top 10 in Spain. <SEP> <P3-S0> James William Buffett (born December 25, 1946) is an American musician, songwriter, author, actor, and businessman. <P3-S1>  He has a devoted base of fans known as "Parrotheads". <P3-S2>  He is best known for his music, which often portrays an "island escapism" lifestyle. <P3-S3>  Together with his Coral Reefer Band, Buffett has recorded hit songs including "Margaritaville" (ranked 234th on the Recording Industry Association of America's list of "Songs of the Century") and "Come Monday".