radios on January 19, 2010. However, the full single release was postponed, so that "Un-Thinkable (I'm Ready)" could be pushed forward as the fourth single. Keys and Knowles recorded their respective parts in same studios with engineer Ann Mincieli. "Put It in a Love Song" was recorded in two studios at Oven Studios and MSR Studios in New York City. "Put It in a Love Song" is a song that lasts for three minutes and fifteen seconds. The song is composed in the key of A♭ major and is set in time signature of common time, with a moderate tempo of 100 beats per minute. While reviewing The Element of Freedom, Greg Kot of Chicago Tribune compared the song with Knowles' song "Single Ladies (Put a Ring on It)" (2008) commenting that it had the same "sassiness on the tribal groove". A writer of The New York Times also compared the song with "Single Ladies" saying that it had a similar "thumping, step-dancing atmosphere". The song's lyrics are about a girl who just wants her lover to write her a song or a text message and prove to her he's worth her time. The song features a brief chat between Knowles and Keys at the beginning; "Hey yo, B!/What up, A?". Critical reception The song received generally mixed to positive reviews from critics. Randy Lewis of Los Angeles Times gave the song a positive review stating "self-confidence is in full flower in 'Put It in a Love Song,' her effervescent duet with Beyoncé that has 'hit single' written all over it." Allison Stewart of The Washington Post stated "Keys also teams with Beyoncé, the glittery Diana Ross to Keys's super-serious poetry major, for the disc's best track, 'Put It in a Love Song.'[...] 'Love Song' is an oddly mechanical number that lurches from diva to diva but somehow doesn't fall over..." Andrew Burgess of MusicOMH called it one of the album's "standout moments", describing it as having "the Sasha Fierce brashness" and that "the always fantastic Beyoncé takes a notable backseat to Keys for a delightful and surprising change of pace". Stephen Thomas Erlewine of the website Allmusic chose "Put It in a Love Song" as one of the three best songs on The Element of Freedom and commented, "On The Element of Freedom, that elegance is so easy it borders on the sleepy, with Keys' understatement undercutting livelier numbers