Given how seniors mostly go for the slow, semi classical, traditional types of melodies and songs (mostly ethnic Indian), here is a list of songs that you could possibly gift to an elder as a compilation in any way shape or form. ARR has lots of songs that the older generation would love, but may not have heard.
Sarfarosh Ki Tamanna Main Vari Vari Desh Ki Mitti Ay Hairathe Aashiqui All songs from Sangamam Pookalam from Thenali O Paalanhare Dola Dola En Swasa Katre title song Hum Hai Iss Pal Yahaan Milo Wahaan Wahaan Zindagi Muskura Naina Milaike Piya Ho Innisai from Godfather Naina Neer E Ajnabi Sahaara (slow) Taal Se Taal Mila Kanna Muchi Yenna Solla Pogirai Allai Payuthey title song Radha Kaise Na Jale Kehta Ye Dil Ishwar Allah Kismat Se Tum Jaari Ja Tu Hi Re Dheeme Dheeme Saiyaan (Zubeida) Mehndi Hai Rachnewali Rang De Basanti Chola Ghoomparani Ekla Chalo Re Pal Pal Bhaari Man Mohanna Jashne Bahaar Mere Maula Bhor Bhaye Tere Bina There are more, but I can think of these for now.

