Stratos Papaioannou was born in 1997 in Athens. He started playing drums at the age of 12. He took lessons with Dimitris Klonis and Spyros Panagiotopoulos and continued his studies at the Athens Conservatory, where he attended classes in jazz harmony, orchestration and ensembles with Dimitris Kalantzis, Takis Paterelis and Periklis Trivolis. He has attended seminars with Mark Guiliana, Pablo Held Trio, Rebrand Trio, Iotis Samaras, Vangelis Karipis, etc.

He is a graduate of Panteion University.

He has collaborated with musicians such as: Yiannis Monos, Apostolos Leventopoulos, Yiannis Loukatos, Dimitris Kalantzis, Periklis Trivolis, Grigoris Theodoridis, Giorgos Kostopoulos, Vassilis Koutsonanos, etc.