The magnificent prelude that Sankara wrote to his commentary on the Vedanta Sutras is celebrated as The Adhyasa Bashya. It is in fact not a Bhashya; it is not a commentary. It is an independent piece of writing, which served as a prologue to his main work.
Prashnottara Ratnamalika (Kannada) by V Subrahmanian
Ch4 Panchadashi (Kannada) by V Subrahmanian
Ashtadhyayi by Sri NCT Acharya
Gita - Kartavyam by Ammu Annaji Rao (Telugu)
Talks on Advanced Vedanta by Acharya Sadaji