Trinity

https://en.wikipedia.org/wiki/Trinity_of_Carnatic_music
http://www.vgovindan.info/

Interestingly, 

1. Saint Thyagaraja swamigal followed Sage Narada’s tradition, and 
2. Sri Muthuswami Deekshidar followed Lord Hanuman’s tradition.
3. Syama Sastri's followed Kamakshi Tradition son, the illustrious Subbaraya Sastri (1803–1862), had the unique privilege of learning under each of the trinity.

Tyagaraj

https://t8oo.blogspot.com/

Muthuswami

https://freeglobaluniversity.blogspot.com/search/label/72

Syama

http://01si.blogspot.com/search/label/ShyamaShastri

http://012p.blogspot.com/search/label/PersonalisedBhagavat

Tube
https://www.youtube.com/results?search_query=Trinity+of+Carnatic+music

Library
http://tamilelibrary.org/teli/tnmusic1.html

Heritage / Bhakti
http://www.heritagetown.org/smusician.html
http://haridasgiri.blogspot.com/ 

My Grandfather
http://carnaticclassicals.blogspot.in/

https://en.wikipedia.org/wiki/Thiruvarur

Tube

https://www.youtube.com/results?search_query=Thiruvarur

Slides

http://www.slideshare.net/search/slideshow?searchfrom=header&q=Thiruvarur

sanjaysub

 https://www.youtube.com/c/sanjaysubmusic/videos

6789

Six Headed God Inspired

https://freeglobaluniversity.blogspot.com/search/label/Skanda

7 Talas

https://www.google.com/search?q=only+composer+to+have+kritis+in+all+the+seven+basic+Talas

72 Scales

https://www.google.com/search?q=Melakarta

8 Declension krithis on Muruga

https://www.google.com/search?q=eight+declension

9 

https://pl1n.blogspot.com/search/label/Kritis

http://trinitygoddess.blogspot.com/search/label/Navavarnam

https://trinitygoddess.blogspot.com/search/label/Nilotpalamba

Muthuswami

https://www.google.com/search?q=Muthuswami

6789

https://01sm.blogspot.com/search/label/6789

Charanam

https://www.google.com/search?q=Samashti+Charanam

Guru

https://www.google.com/search?q=Guruguha

https://www.google.com/search?q=Mayamalavagowla

https://www.google.com/search?q=Chidambaranatha+Yogi

Blog

http://veenavaadhini.blogspot.com/

http://howhumans.blogspot.com/search/label/Mahavidyas 

Abby

 https://www.youtube.com/c/AbbyVOfficial/videos

HOPEADTV

 https://www.youtube.com/c/HOPEADTV/videos