It sounds like you're looking for the famous Telugu devotional song sung by S. P. Balasubrahmanyam (SPB) — likely from the movie Annamayya (1997), where SPB sang many iconic Annamacharya keertanas.
SPB's rendition is widely regarded as the definitive version of this Annamacharya brahmanda nayakuni brahmotsavam song by spb free top
– Most have free, ad-supported streaming for this song. brahmanda nayakuni brahmotsavam song by spb free top