Azizi,
To answer your questions:
1. Yes, the "Lead Me to Calvary" to which I referred has the chorus,
   "Lest I forget Gethsemane,
    Lest I forget Thine agony;
    Lest I forget Thy love for me,
    Lead me to Calvary."
We often sing this before the Communion, also known as the Lord's Supper, the weekly commemoration of Jesus's death. In fact, we did this morning.
2. No, the term "churches of Christ" does not refer to a denomination. It refers to congregations which are not affiliated with any denomination and which use the New Testament as their only "creed". Other Biblical names, such as "church of God" are sometimes used, and it is perfectly proper to do so. However, since many of those other names are being used as names of denominations, I try to avoid confusion by using the term "churches of Christ".
Thanks for an interesting thread idea.
Kent