The back of the current edition of the 1912 United Presbyterian Psalter has a section with Genevan Tunes. The Dutch used them for a long time and are sometimes called "Dutch tunes" since they added the harmony to the melody. The Protestant Reformed Church has a psalm singing choir that puts out CDs and a number of these tunes are on the CDs. I am sure a quick google search will get them for you. Of course, they also have either a piano or an organ or both... I am thinking piano, but I cannot remember off the top of my head.
BTW, one of my deacons, Joel Chairez, was instrumental in getting that Spanish psalter back in circulation. RPMissions also helped due to a large pre-purchase.
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