Like the Beatles’ other covers, Larry Williams’ “Bad Boy” reveals their roots: In this case, rhythm and blues.

‘Standard Time’ launched Wings guitarist Laurence Juber’s highly respected career as a sophisticated yet graceful finger-style solo performer.

“Act Naturally” came, well, naturally for Ringo Starr. He had flirted with country music long before joining the Beatles.

The Beatles, particularly John Lennon and Paul McCartney, were avid students of the Texas-born singer-songwriter Buddy Holly.

“Anna (Go to Him)” impacted the Beatles’ songwriting, and Arthur Alexander’s heartfelt vocal style influenced John Lennon’s intensely personal performances.

This is the Chicago I long for. It’s nice to see it return every now and then.

“O Come All Ye Faithful,” featuring restrained, yet thoughtfully modern production from Roy Bittan, is one of my favorite Chicago Christmas songs.

David Crosby seems almost naked without his guitar, yet still shines brightly on yet another stellar Joni Mitchell cover song.

“Not a Second Time” may be a hidden gem off ‘With the Beatles,’ but it has also become famous for two other words: “Aeolian cadence.”

‘On Broadway’ offers mostly curiosities for admirers and collectors of the brilliant ’60s and ’70s songs composed by Barry Mann and Cynthia Weil.