Here you go!
https://www.youtube.com/watch?v=Q3CBWDJlZb0
Couple things - the audio was ripped from the game when Bard first hit PBE so there are some lines that weren't added yet. There are also several changes that were made to the first 10 lines or so that you hear in the video - layers were added to them.
You're also hearing the lines in batches: "No Meeps" first, then "One Meep", Two and then Three Meep lines. When Bard speaks in game he'll play a line based on how many Meeps are at your side - the more meeps you have the more musically complex the lines become.
For instance. Zero Meep lines have no flutes. Two Meep lines have multiple flutes that kind of dance around and follow each other musically.
Each tier of VO is in a different key so as Bard cycles through Meeps he'll also be cycling through different chord progressions.
EDIT: for those interested here is a reddit post that goes into some more details about Bard's VO
http://www.reddit.com/r/leagueoflegends/comments/2y469u/question_about_bards_voice/