As Joey Feek's courageous cancer battle continues, Rory Feek is opening up about the future.
Speaking exclusively with ET, Rory says he won't continue to make music without his wife by his side.
"This is the last record that Joey and I will ever get to make and the last songs we'll ever get to sing together," he says of their new album, Hymns That Are Important To Us, out Feb. 12 exclusively at Cracker Barrel. "I have no desire to go on singing or performing without her."
Rory reveals that the couple's daughter, Indiana, who will celebrate her second birthday next month, is already well versed in the tracks on the album.
"Her mama rocked her to sleep singing them and has even taught Indy how to sing along with sign language on 'Jesus Loves Me,'" he says. "Joey singing these songs is a big part of Indy's life so far, and I know that these songs will go on to be very important to her as she grows up and is able to hear Joey still singing them to her when we play the album."
Rory explains that while the album's tracks were recorded at a studio in Nashville, Joey laid down most of her final vocals in a Georgia hotel room while undergoing chemo and radiation last year.
In addition to Hymns, Joey + Rory will release a DVD "not long" after the album hits shelves.
Joey Feek and wife
EXCLUSIVE: Rory Feek has 'no desire to go on singing or performing' without Joey
NASHVILLE, TN - JUNE 09: Rory Feek and Joey Feek of the band Joey & Rory perform on the Chevrolet Riverfront Stage during the 2013 CMA Music Festival on June 9, 2013 in Nashville, Tennessee. (Photo by Frederick Breedon IV/WireImage)
LAS VEGAS, NV - APRIL 07: Musicians Rory Lee Feek and Joey Martin Feek of Joey & Rory arrives at the 48th Annual Academy of Country Music Awards at the MGM Grand Garden Arena on April 7, 2013 in Las Vegas, Nevada. (Photo by Denise Truscello/WireImage)
LAS VEGAS, NV - APRIL 06: Musicians Joey Martin Feek and Rory Lee Feek attend The ACM Experience during the 48th Annual Academy of Country Music Awards at the Orleans Arena on April 6, 2013 in Las Vegas, Nevada. (Photo by Jerod Harris/ACMA2013/Getty Images for ACM)
LAS VEGAS, NV - DECEMBER 07: Rory Lee Feek and Joey Martin Feek perform at Las Vegas Convention Center on December 7, 2012 in Las Vegas, Nevada. (Photo by Mindy Small/FilmMagic)
INDIO, CA - APRIL 24: Joey Feek (L) and Rory Feek of Joey + Rory perform as part of the Stagecoach Music Festival at the Empire Polo Fields on April 24, 2010 in Indio, California. (Photo by Tim Mosenfelder/Getty Images)
Rory Feek and Joey Feek of the band Joey and Rory attend the 'Country Strong' premiere at Green Hills Cinema on November 8, 2010 in Nashville, Tennessee. (Photo by Frederick Breedon IV/WireImage)
LAS VEGAS - APRIL 17: Musicians Rory Feek (L) and Joey Martin of Joey + Rory perform onstage at the 45th Annual Academy of Country Music Awards concerts at the Fremont Street Experience during the on April 17, 2010 in Las Vegas, Nevada. (Photo by Rick Diamond/Getty Images)
TWIN LAKES, WI - JULY 18: Joey Martin Feek and Rory Lee Feek (R) of singer/Songwriter duo Joey + Rory perform at the 17th Annual Country Thunder USA music festival on July 18, 2009 in Twin Lakes, Wisconsin. (Photo by Rick Diamond/Getty Images)
NASHVILLE, TN - JUNE 16: (L-R) Singer Joey Martin Feek and Rory Lee Feek attend the 2009 CMT Music Awards at the Sommet Center on June 16, 2009 in Nashville, Tennessee. (Photo by Rick Diamond/Getty Images)
NASHVILLE, TN - JUNE 16: Singer Joey Martin Feek and Rory Lee Feek of Joey + Rory perform on stage during the 2009 CMT Music Awards at the Sommet Center on June 16, 2009 in Nashville, Tennessee. (Photo by Jason Merritt/Getty Images)
LAS VEGAS - APRIL 04: Rory Lee Feek and Joey Martin Feek of Joey & Rory pose Backstage Creations at the 2009 Academy of Country Music Awards Day 1 on April 4, 2009 in Las Vegas, Nevada. (Photo by Mark Sullivan/WireImage) *** Local Caption ***
LAS VEGAS - APRIL 06: Joey Martin (L) and Rory Feek of Joey + Rory perform during the 44th annual Academy Of Country Music Awards All-Star Jam held at the MGM Grand on April 6, 2009 in Las Vegas, Nevada. (Photo by Ethan Miller/ACM2009/Getty Images for ACMA)
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"It's a live concert Joey and I filmed in September at our farm, and also interviews we did with Bill Gaither in October. Joey was still going through chemo and radiation as we recorded them, so it was hard on her," he recalls. "But she just kept smiling and pushed through it because this project is so important to her.
"I sat beside Joey's bed and watched the final edit of the DVD with her a couple of weeks ago," he continues. "We were both moved to tears. It's very special."
Rory has kept fans and well-wishers up to date on Joey's condition through regular posts on his blog, This Life I Live. Recently, the singer-songwriter confessed that his wife's condition had continued to "decline" and wrote, "I'd like to tell you that she's doing great and is going to beat this thing. But I can't."
"We've received hundreds, if not thousands of letters and cards and gifts that people have sent to us through all of this," Rory tells ET. "Many of them tell stories of their struggles with cancer, their families, and their faith. They write and share their hearts with us to encourage us, just as we strive to encourage them through our journey and my blog."