"The Hardest Part" was the second song released as a single from Blondie

Blondie (band)

Blondie is an American rock band, founded by singer Deborah Harry and guitarist Chris Stein. The band was a pioneer in the early American New Wave and punk scenes of the mid-1970s...

's fourth album Eat to the Beat

Eat to the Beat

Eat to the Beat is the fourth studio album by the American rock band Blondie. It reached no.1 on the UK album charts in October 1979, no.9 in Australia and no.17 in the US.-History:...

in the United States, instead of "Union City Blue

Union City Blue

"Union City Blue" is a song by the US rock band Blondie. It was written by Deborah Harry and Nigel Harrison, and was featured on their 1979 album Eat to the Beat.-Single information:...

". It was written by the group's principal songwriting partnership, Deborah Harry

Debbie Harry

Deborah Ann "Debbie" Harry is an American singer-songwriter and actress, best known for being the lead singer of the punk rock and new wave band Blondie. She has also had success as a solo artist, and in the mid-1990s she performed and recorded as part of The Jazz Passengers...

 and Chris Stein

Chris Stein

Christopher "Chris" Stein is co-founder and guitarist in the New Wave band, Blondie. He is also a producer and performer for the classic soundtrack of the hip hop film Wild Style....

. It was released as a single only in the US to minor success, reaching number 84 on the Billboard Hot 100.

Music video

A music video was produced to promote the single, and features Debbie Harry wearing a dress designed by Anya Phillips.

Track listing

US 7" (CHS 2408, February 1980)

1. "The Hardest Part" (Deborah Harry
   Debbie Harry
   Deborah Ann "Debbie" Harry is an American singer-songwriter and actress, best known for being the lead singer of the punk rock and new wave band Blondie. She has also had success as a solo artist, and in the mid-1990s she performed and recorded as part of The Jazz Passengers...
   
   , Chris Stein
   Chris Stein
   Christopher "Chris" Stein is co-founder and guitarist in the New Wave band, Blondie. He is also a producer and performer for the classic soundtrack of the hip hop film Wild Style....
   
   ) - 3:42
2. "Sound-A-Sleep" (Deborah Harry, Chris Stein) – 4:18

Chart performance

Chart (1980)	Peak Position
Billboard Hot 100 Billboard Hot 100 The Billboard Hot 100 is the United States music industry standard singles popularity chart issued weekly by Billboard magazine. Chart rankings are based on radio play and sales; the tracking-week for sales begins on Monday and ends on Sunday, while the radio play tracking-week runs from Wednesday...	84