I don't know if you've noticed this as well, but older people aren't as "old" in their musical tastes as they used to be.
Let's imagine one hypothetical example of a proverbial "little old lady" living in a home for the aged. If she celebrated her 85th birthday this week, she would have been born in 1931. Her early teens, a crucial time of life for the development of many people's musical tastes, would have been during the Second World War, the era of "Big Band" swing music, Glenn Miller, Benny Goodman and all that. She would have been in her mid-twenties when Elvis started shaking his pelvis. She would have been in her early thirties, and probably still interested in the music of younger people, at the time when the Beatles first appeared on the scene.
Nevertheless, the majority of people who visit homes for the aged as volunteer entertainers will play and sing music, not from the time when this lady and her contemporaries were young, but from their parents' era at the time of the First World War, or even from their grandparents' era in the 1890s.
Whenever I tell this to people who sing or play music at homes for the aged and suggest they may want to add some music from the Beach Boys and the Four Seasons (or even, to be a bit less radical, some "Big Band"-type stuff), they look at me like I've taken leave of my senses. I just think that this lady and her friends may occasionally be "In the Mood" for some "Good Vibrations" from her own generation's music, rather than her grandparents' music.
Anyway, I believe the assumption that all older people in 2016 will automatically enjoy music from the 1890s is just a bit ageist.
I hear similar ageism at times regarding music in churches.
Most of the Uniting Church congregations I know use a reasonable variety of music, singing a mixture of newer and older music, with probably a bit more new stuff in the mix.
As far as the newer music is concerned, you may find hymns by Elizabeth Smith or John Bell. Worship responses from the Taizé and Iona Communities may feature, as will the occasional African or Latino chorus, Scripture in Song jingle, or (the - very occasional!) Hillsong ditty. Such mainstays of the post-Vatican 2 Catholic repertoire as "Here I am, Lord" and "Come as you are" will be sung at the drop of the proverbial hat. All very good! There may the occasional raised eyebrow (including mine) whenever "God gives us a future" is used (once again!) at a time when the Church Council is trying to persuade the congregation to take a particular course of action. But, nevertheless, the mix of newer music is mostly pretty good.
While the newer music comes from a variety of sources in most UC congregations, the sources of older music are a bit more limited in some congregations. In some churches I know, requests by some worshippers for "a few more of the older, traditional hymns" are regarded as a desire for 19th century revivalist hymns. For the most part, with the exception of a few worshippers of a more conservative bent in their own beliefs, that's not what they're asking for. They may be asking for the occasional Scots Psalm, or the occasional Reformation-era German hymn, or one of Chuck Wesley's greatest hits. In only a very few cases, are they asking for 19th century revivalist songs.
I believe it's ageist to assume that an older person today, born in the early 1930s, would automatically prefer popular music of the 1890s to the popular music of their own youth, be that music Glenn Miller or Elvis.
I believe that it's equally ageist to assume that the same older person, if their religious background was in a mainstream congregation of any mainstream denomination, would suddenly develop a taste for Sankey. While they may be "In the Mood" for "Now Thank We All our God", being fobbed off with "Trust and Obey" may send more than a few to "Heartbreak Hotel".