Interstellar original motion picture soundtrack by Hans Zimmer is officially available in high-resolution FLAC (24-bit/44.1 kHz)
The most reliable "link" to a FLAC file is often a physical CD or Vinyl.
Additional Resources:
FLAC Links
Here's the tracklist:
Zimmer’s genius is most evident in the track "Tick-Tock," played during the Miller’s Planet sequence. The prominent ticking noise occurs every 1.25 seconds
The soundtrack also explores themes of nostalgia, love, and the passage of time. The score's use of recurring motifs and leitmotifs adds depth and complexity to the narrative, underscoring the film's exploration of the human condition.