Razakin wrote:maybe Tamura has done something good. 
Plenty popular Tales tracks are his, the ones I have confirmations for are these: (ToP:) Arche, Be Absentminded, Bright Moonlight Night, Fighting of the Spirit, (ToD2:) A Resolution, Coup de Grace, Reala, The Dreadnought, (ToS:) Town of a Wind and Ruins, (TotA:) Wish and sadness. Additionally ToS' Fatalize is credited to him on the Japanese Wikipedia (and is his style alright), but I haven't seen any official confirmation of this. (Tamura is usually generally credited for doing the character and dungeon themes.)
These Tales of Series albums are most likely TEAM Entertaiment/Taku Kitahara granting Sakuraba's wish of being able/paid to make arrangements of his works (but BKO doesn't get this treatment, probably wouldn't be profitable for TEAM *shrugs*). Neither Bandai Namco nor Tales Studio seem to be involved at all outside licensing personels going by the staff credits, so the albums barely are mentioned on their website, and of course the selection is by Sakuraba and works by other composers are omitted.
Of the Piano Arrange I'm loving Desert and Burning Tower, the arrangements of super short title pieces like Tales of Destiny 2 and The Dawn of Departure are greatly and nicely extended, the others are between good and to be expected for a Sakuraba Tales piano pieces. The Answer (my favourite in-game piece from ToR) is wtf worthy. And Surprise Attack! is actually an arrangement of Sink into Vise.