thesession.org
All the Irish tunes are on that site.
on youtube knightw11 has wwe sheet music he is really good!
If the music is in the public domain, you can find it legally on the internet. Otherwise you have to buy the sheet music. Artists deserve payment. Sometimes public libraries will buy sheet music so you can check if yours does.
Music stores have it, or online. Lyrics.com is a good one.
tactic
One may find blank sheet music at any reputable music equipment vendor. A good vendor is "Music Paper". One may also download and print blank sheets from "Blank Sheet Music".
i play flute and piano and I've noticed that the notes are the same on the g/treble clef. except for the chords. hears the best thing i could get: http://www.scribd.com/doc/362101/The-SimpsonS-Theme-Piano-Partitura-Sheet-Music-Noten-Partition-Spartiti and i apsolutly hate playing flute
A good place to find sheet music for modern music is www.musicroom.com
You can find the sheet music for "Rain Is A Good Thing" by Luke Bryan on various online music platforms, such as Musicnotes, Sheet Music Plus, or Amazon. Additionally, local music stores may carry it, or you can check websites that specialize in digital sheet music. For piano or guitar tabs, sites like Ultimate Guitar or MuseScore may also have user-created arrangements.
sheetmusic.com
The best way to find and download treble clef sheet music online is to search for reputable websites that offer a wide selection of sheet music in the treble clef. Websites like IMSLP, Musicnotes, and Sheet Music Plus are good places to start. Once you find the piece you're looking for, you can usually purchase and download the sheet music directly from the website.
e-chords.com
Google it - His daugther has it and is for sale !