Tikkun HaKlali is a selection of Ten Psalms that Rabbi Nachman recommened for recital as a general spiritual remedy bringing inner purity and joy as well as many other benefits.
The psalms are: 16, 32, 41, 42, 59, 77, 90, 105, 137 and 150.
They are to be recited in the same order in which they appear in Sefer Tehillim (Book of Psalms).
The Ten Psalms correspond to the Ten Kinds of Song. These ten melodies are the true remedy. There is a specific remedy for each sin, but this is the General Remedy. (Sichot Haran #141)
The Tikkun HaKlali video/music is by Erez Yechiel set to an entrancing meditative melody while being sung, in prayer), by the artist and is available at Remarkable Maven website.
There are places so fine and narrow that no remedy has the power to penetrate them except through the Tikkun HaKlali (General Remedy), which injects healing into even the narrowest, finest places. First it is necessary to apply the General Remedy, and through this all the individual flaws will automatically be rectified.
I am very positive in everything I say. But I am most positive in regard to the great benefit of these Ten Psalms.