Seth MacFarlane, the creator of Family Guy, has made a surprising connection to the legendary Frank Sinatra, and it's not just about his love for the singer's music. In an exclusive interview with PEOPLE, MacFarlane revealed how he acquired Sinatra's lost archive of arrangements and turned them into a new album, Lush Life: The Lost Sinatra Arrangements.

MacFarlane's association with Sinatra's son, Frank Sinatra Jr., dates back to his work on Family Guy, where Frank Jr. appeared on several episodes. Through their collaboration, MacFarlane developed a deep appreciation for classic orchestras and arrangements from the era. After Frank Jr.'s passing in 2016, his sister Tina Sinatra became the steward of the arrangements, and MacFarlane grew close to her. Tina eventually asked MacFarlane if he would be interested in acquiring the charts, with the goal of bringing them to life rather than letting them collect dust.

MacFarlane took on the task and discovered that many of the songs in the archives were never sung by Sinatra, dating back to the late 1950s and early 1960s. He hired an orchestra and recorded the arrangements, resulting in a whole new album of Sinatra songs that were previously unheard. MacFarlane estimates that there are about three albums' worth of songs in the archives.

The most challenging part of the process was recreating the warmth and authenticity of Sinatra's recordings. MacFarlane opted to record to reel-to-reel tape instead of digitally, which gave the album a warmer sound. With an orchestra of 70 musicians from the U.S. and U.K., MacFarlane was able to turn the arrangements into something "a little more enduring."

Up next for MacFarlane is a limited engagement at Voltaire at the Venetian in Las Vegas, taking place from July 3-5. He will be performing songs from his new album, as well as other classics, with a 35-piece orchestra. MacFarlane promises an "old-school Vegas experience" with a serious bunch of musicians.

MacFarlane's admiration for Sinatra grew stronger during college when he bought a "Best of Sinatra" CD and listened to a recording of "Three Coins in the Fountain." He realized that Sinatra's arrangements were more like film scores, with intricate details and variance. His favorite Sinatra record is Frank Sinatra Sings for Only the Lonely from 1958, which he believes showcases everyone involved at the peak of their talent and career.

Stream Lush Life: The Lost Sinatra Arrangements now and experience the magic of Sinatra's lost arrangements brought to life by MacFarlane.

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