I am a composer of liturgical music for both Roman Catholic and Protestant congregations, with over 400 compositions published by GIA, Augsburg Fortress and other publishers. For the past 35 years I have presented workshops and concerts across North America and in Europe, the Pacific Rim, Asia and Central America for church musicians and anyone interested in the renewal of worship. 

There are many links on this website that will connect you to my publisher, GIA, allowing you to listen to music clips of my music and order print editions or recordings. Here is a link to an index of my music published by GIA.

Free pre-publication songs for download.

Because it takes a long time to get a song into print, and because there are so many pressing issues today that Christians must sing about, I have begun to offer free pre-publication PDFs of songs that I have done in workshops. This link will help you find a list and a description of the songs. Pre-publication songs

Notes from workshops I have given can also be found by going to the Unpublished Music & Articles link.


"Child of Wonder" book now available

I wrote the song "Child of Wonder" for the baptism of my godson, Joshua, in 1984. Since then it has been sung at the baptisms of thousands of children across many denominations and cultures. Now Stephen Nesser has created a beautiful book to accompany the song. It includes 26 pages of stunning illustrations, celebrating an inclusive vision of children and families from many cultures and religious traditions. The song itself is included within the book, as well as a free download link for a recorded version of the song.

"Child of Wonder" is a perfect way to celebrate the sacred gift of children.

 Here is a link for more information and images: Child of Wonder book

Here is a link for ordering the book from GIA: Order Child of Wonder book


Holden Evening Prayer 30th Anniversary Edition (now available):

Holden Evening Prayer (or "Vespers '86" as it is still known at Holden Village) was written during the winter of 1985-86 when I was living with my family at Holden. As each part of the vesper service was written. it was prayed with the community as part of evening worship. The final version represents a very real collaboration with the winter community at Holden. I believe that one of the reasons it continues to be used is because it reflects the very real prayer of a particular community.

To mark its 30th anniversary GIA has issued a new edition of Holden Evening Prayer. I have written three new supplmental psalms that can be included during the seasons of Advent and Lent. There is also a new handbell part, in addition to the keyboard, guitar and C instrument parts. To hear music clips or to order the various editions, click here. When ordering, be sure that you are ordering the 30th anniversary edition (it's actually also less expensive that the original edition!).


A new collection by Marty-Pilgrims and Companions

Pilgrims and Companions a recording (and printed edtions) of 11 new songs is now available from GIA Publications. The music, written over the past year, reflects my conviction that our personal faith journey as a pilgrim must always be in harmony and solidarity with our common journey as companions and children of God. A number of the songs express my passion for Christian engagement in justice issues, including care for creation and climate change, support for refugees and other oppressed peoples and an end to the epidemic of violence and enconomic inequality in our culture. Other songs address seasons of the liturgical year (Lent and Easter) and seasons of life (weddings, anniversaries, times of doubt and hope and gratitude). Three of the songs feature beautiful new lyrics by textwriter Adam M. L. Tice. Click here to purchase any of the music or hear music clips of the songs. 



Sun, Dec 16: St. Paul, MN
Taize prayer
Location: Cretin-Derham Hall,
550 Albert St S
Contact: http://www.davidhaas.us/calendar/

Feb 8-9, 2019: Amery, WI (Diocese of Superior)
Retreat & workshop
Location: St. Joseph Church,
1050 Keller Ave N
Contact: TBD


Schedulng an event You can schedule an event with Marty (workshop, conference, evening of sung prayer) by wrting to him at

Every attempt will be made to keep this list as up-to-date and accurate as possible; however, it is subject to change.  If you cannot reach the contact person for any of these events, you may Email Marty