There are many pieces with the names (or descriptions) "chaconne", "Ave Maria", and "gavotte". You need to specify the composer at least, and possibly more, to be sure of getting the right piece. Nevertheless:
J. S. Bach Chaconne in D minor from the Partita BWV 1004? http://icking-music-archive.org/scores/bach/sonatas_and_partitas/bwv1004.pdf
Ave Maria by Gounod? http://icking-music-archive.org/scores/gounod/Gounod_Ave_Maria.pdf
Gavotte – by Lully? Bach? More details needed.
Pachelbel's Canon in D: http://icking-music-archive.org/ByComposer/Pachelbel.php (various versions, but none for *just* violin and piano. A Y!A search might bring up a more appropriate version: this piece, for various instrumental combinations, gets asked for approx once per day.)
And a Happy New Year too!!