"How Deep Is Your Love" is a ballad by the Bee Gees, written and recorded in 1977. It was released as a single in September 1977 by RSO Records and featured on the soundtrack of the film Saturday Night Fever.

The song achieved significant commercial success, reaching number three in the UK and Australia, and topping the US Billboard Hot 100 chart on December 24, 1977, where it remained in the Top 10 for 17 weeks. It also held the number one spot on the US adult contemporary chart for six weeks.

The song is known for its warm, tender melody and expressive delivery, with critical acclaim highlighting its harmonies and delicate vocal style.

It won the Grammy Award for Best Pop Performance by a Group in 1978 and was nominated for a Golden Globe for Best Original Song.

"How Deep Is Your Love" is considered one of the Bee Gees' most beloved tracks, ranking number 375 on Rolling Stone 's list of the 500 Greatest Songs of All Time and voted The Nation's Favourite Bee Gees Song in a 2011 British TV special.

The composition involved Barry Gibb working closely with keyboard player Blue Weaver, who contributed significantly to the piano structure of the song.

The lyrics express a deep emotional connection and devotion in a romantic relationship. You can find official music videos and live performances of "How Deep Is Your Love" by the Bee Gees on platforms like YouTube.

In summary, "How Deep Is Your Love" is a classic Bee Gees love ballad from 1977, celebrated for its heartfelt lyrics, smooth harmonies, and enduring popularity worldwide.