A 19th century melodic and joyful Classical Guitar solo for early intermediate level.
With tablature.  With downloadable mp3 for audio help.
By anonymous 19th century.
Four pages, 3:40 min.

Santa Lucia is a traditional Neapolitan song. It was translated from Neapolitan into Italian by Teodoro Cottrau (18271879) and published as a barcarolla in Naples in 1849. The song was also recorded by Elvis Presley on the 1965 album Elvis for Everyone and featured in the film Viva Las Vegas.
For Classical Guitar solo with tablature, two pages, 42 bars, 1:25 min, early intermediate with downloadable mp3 for audio help.

O Christmas Tree ("O Tannenbaum") is a German Christmas song. Based on a traditional folk song, it became associated with the traditional Christmas tree by the early 20th century and sung as a Christmas carol.
For Guitar solo or Guitar and voice (classical guitar or acoustic guitar fingerstyle).
Easy to Early Intermediate.
With Tablature. With downloadable mp3 for audio help or sing along. With melody line. With lyrics.
Pages: two pages.

Danny Boy is a famous ballad set to an ancient Irish melody with lyrics by English songwriter Frederic Weatherly.
For fingerstyle Guitar solo or guitar and voice.
Early intermediate. 
With Tablature. With lyrics. With mp3's for audio help, or sing along.
Pages: Three pages.

Valse Criollo.
For Guitar solo (Classical or Acoustic Guitar with nylon strings, fingerstyle).
Early internediate to Intermediate.
With tablature.  With finger position suggestions.
With simple downloadable mp3 just for audio help.
Pages : Two (2) pages, 1:40' min.