music: 60's Chart Toppers: Name The Artist: Let Me In?

Questions

Although the fabulous Thunderbirds sang 'I Thank You' it was originally released by this soul duo in 1968.?

Although the Fireballs had some success with the record "Torquay" when they teamed up with Jimmy Gilmer, this record stayed at number one for an entire year?

Alvin & the ...?

Ambient-Pop English/French group founded by Laetitia Sadier and Tim Gane?

American Songbook: "..and if you should survive to 105, think of all you'll derive..."?