I am Sandra-Offereins-Nentjes, married to Johan, mother of Rianne and Ilse,  Callum and Josh’s mother-in-law and grandma of Elissia and Emmelyn.


I am a singer-songwriter, 

teach and coach women who are worship musicians, 

coordinate worship teams within LifeStream Europe 

and I am a deacon and member of the worship team at Celebration Church Netherlands in Hilversum.



SONmusic is the company and label that hosts all of my music productions and activities. I give singing & piano lessons, 1 on 1 in my studio at home. These lessons come with worship coaching where needed & appropriate. There is place for 2 more students. 


In 2019 I laid down my role as Worship coordinator for European English Aglow to make space for a new season. In Augustus 2021 the 4th semester of the 2-year online Awakening School of Theology started. This school is led by Michael Heisser and is connected to Celebration Church in Jacksonvillle, U.S.A.


Work experience

LifeStream Europe

2011 – 2018

Worship leader for the annual conferences and events at  LifeStream Europe (LSE)

2016 – now

Member of the leadershipteam at LSE en coördinator of the Worship teams 


EU EN Aglow

2009 – now

Worship leader at the Amersfoort Aglow Chapter

2016 – 2019

Coördinator Worship and Worship leader (2012 – 2019) at the annual European English Aglow conferences


2014 – 2016

Worship leader at the annual Naïma conference organised by stichting Evangelie & moslims 

Christ Churches NL

2015 – 2019

Worship leader for the annual Christ Church Women’s retreats 

Guido Amersfoort

2015 – 2018

+ Modules en talent classes for clesses 1 & 2 at GSG Guido Secundary school in Amersfoort

I.C.F. Grace Church

2007- 2012

Coördinator for worship and worship leader at Grace Church, Amersfoort

Worship team @BG

2012 – 2019

Member and worship leader at @BG | At Breaking Ground


Gospelchoir Testify

2000 – 2006

Conductor at Gospelkoor Testify!, Amersfoort



CD ‘Wandelen’, with 15 Dutch songs 


CD ‘Hear my cry!, with 12 English songs, in cooperation with the band U-turn 


Both CD’s were produced by mGmusic and released by Ecovata

SONmusic Values

This is what I am passionate about!


SONmusic brings an infuse of life. Fullness of life, that is what Jesus desires for us, He made it possible to live from the overflow. We want to be sparkling, bubbling over, bouncing with fun and with passion.


SONmusic staat voor eerlijkheid, echtheid, betrouwbaarheid en veiligheid. Veiligheid om jezelf te laten horen want veiligheid is groeiruimte. Stap uit je comfort zone op jouw tijd.


SONmusic represents honesty, authenticity, dependability and a feeling of security. It is a safe place where you feel comfortable to let your voice be heard, because safety equals growing space. Step out of your comfort zone when you are ready.


SONmusic sluit aan bij jou en bij jouw vraag met een flexibele en creatieve lesmethode. Vind jouw unieke, eigen & gezond geluid, een geluid dat leven doorgeeft.


SONmusic looks at you and your specific needs and help request with a flexible and creative teaching method. Find your personal unique & healthy sound, a sound that brings life.




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