Kalaya Phongsathorn has been the flute and piccolo player of The Royal Bangkok Symphony Orchestra since 2011. Throughout her orchestra career, she has opportunities to perform under the baton of Maestros Pierre Soudant, Hikotaro Yazaki, Charles Olivier-Monroe, Adrian Prabava, and Michel Tilkin, with renowned soloists such as Jian Wang, Alice Sara Ott, Krystian Zimmerman, Stefan Dohr, etc. Kalaya also performs regularly with the Sawasdee Woodwind Quintet which she co-founded, in Thailand and overseas. The Quintet attended international competitions such as the Terem Crossover Competition in Russia, 2010 (semi-finalist) and the Woodwind Festival in Singapore, 2014 (special mentioned prize). It also received invitations to be guest artists and give workshops in many festivals such as The Macao Band Festival in 2015, The China-ASEAN Music Festival in Nanning, China in 2017, The Thailand International Composition Festival from 2015-2019, and recently presented its innovative research and performance at The International Double Reed International Symposium (IDRS) in Boulder, Colorado, USA in 2022. 

You Kalaya also appears with the Million Wind Philharmonic as well as giving her solo and chamber recitals. In 2008 Kalaya appeared as a soloist in the Brandenburg Concertos Concert with the Pro Musica Chamber Orchestra. She also had an opportunity to be the soloist for the H.M. Bhumibhol’s Compositions concerts with the Pro Musica Chamber Orchestra in 2014 in Bangkok and Cambodia. In 2013 Kalaya was the selected principal flutist for the Phantom of The Opera (international cast), shows in Bangkok. She appeared as a soloist in the Vivaldi Concerto for Piccolo and Orchestra, RV 443 with the Royal Bangkok Symphony Orchestra under the baton of Maestro Hide Shindori in 2019. In 2022, Kalaya launches her recordings of the Thai Contempory Music for the Flutes, mostly her commissions, to online streaming platforms. She has been presenting these compositions in major national and international music events such as the 9th Singapore Flute Festival and the Thailand International Composition Festival. The album can be found on Apple Music, Spotify, YouTube Music, etc.

Kalaya received her Bachelor Degree of Fine and Applied Arts from Chulalongkorn Univerity and graduated with summa cum Laude (first class honors). She was selected as a member of the Asian Youth Orchestra and was awarded a full scholarship from the Austrian government to the Universität für Musik und darstellende Kunst Wien in 2006. Kalaya pursued her Master Degree of Music at Princess Galyani Vadhana Institute of Music, Thailand. Her principle instructors included Ass.Prof.Dr. Charunee Hongcharu, Ass.Prof. Worapon Kanweerayothin, Mr. Suncheep Vidhayanakorn, Univ.Prof.Mag. Robert Wolf (former principal flutist of the Vienna Symphony Orchestra) and Mr. Roberto Alvarez (principal piccoloist of the Singapore Symphony Orchestra). She also had master classes with Susan Hoepner at the Julius Baker International Flute Master Classes 2002, Sir Jame Galway in 2003, Claudio Montafia in 2004 and Robert Aiken at the Forum Flute and Piano in Luxembourg in 2011. 

Her contribution to the development of the flute community in Thailand extends to organizing various major flute master classes and festivals since 2012, inviting world-renowned artists such as Robert Aiken, Trevor Wye, Jasmine Choi, Viviana Guzman and Julien Beaudiment. Her achievements expands beyond music where she is also a certified yoga instructor. She has incorporated yoga into her performance practices and has been frequently invited to give yoga for musicians workshops in music festivals in Thailand and abroad since 2015. Currently, Kalaya is an adjunct flute and chamber music lecturer at the Princess Galyani Vadhana Institute of Music, the Rugby School Thailand and owns a private Music and Yoga Studio, Baanflute.